Methods for treating anxiety disorders, headache disorders, and eating disorders with psilocybin

Abstract

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Description

RELATED APPLICATIONS This application is a divisional of Australian Patent Application No. 2020257625, the entire content of which is incorporated herein by reference. BACKGROUND Psilocybin belongs to a class of drugs referred to as psychedelics (“mind-manifesting” drugs). Specifically, psilocybin is considered a 5-hydroxytryptaminergic (serotonergic) psychedelic, as distinguished from other tryptamines such as dimethyltryptamine (DMT), ergolines such as lysergic acid diethylamide (LSD), and phenethylamines such as mescaline. Psilocybin was first isolated from psilocybe mushrooms and later synthesized in a laboratory. There are several common diseases, disorders, and conditions for which no adequate treatment, therapies or cure exist, including: • Anxiety Disorders: Anxiety disorders are a class of psychiatric disorders that involve extreme fear or worry. Oftentimes, anxiety disorders interfere with daily activities, such as job performance, school work, and relationships. Anxiety disorders have a variety of causes, including changes in the brain, environmental stress, and genetics. Examples of anxiety disorders include acute stress disorder, anxiety due to a medical condition, generalized anxiety disorder, panic disorder, panic attack, a phobia, post-traumatic stress disorder, obsessive-compulsive disorder, separation anxiety disorder, social anxiety disorder, substance-induced anxiety disorder, and selective mutism. • Headache Disorders: Headache disorders are characterized by recurrent headaches and are among the most common disorders of the nervous system. Headaches are a disabling feature of headache disorders, such as migraine, tension-type headache, and cluster headaches. 2026204976   25 Jun 2026 • Eating Disorders: Eating disorders are characterized by irregular eating habits and severe distress or concern about body weight or shape. Eating disturbances may include inadequate or excessive food intake which can ultimately damage an individual’s physical and / or psychological health. Examples of eating disorders include pica, anorexia nervosa, bulimia nervosa, rumination disorder, avoidant / restrictive food intake disorder, and bingeeating disorder. There remains a need in the art for improved compositions and methods for treating subjects using psilocybin. SUMMARY Psilocybin may provide numerous clinical benefits, such as benefits in neural plasticity and cognitive function (as measured using e.g., Cambridge Neuropsychological Test Automated Battery (CANTAB) tests ) with improvements in, for example, working memory and executive function, sustained attention, and episodic memory. These benefits have implications for psilocybin’s use in the treatment of various diseases, disorders, and conditions, including both psychiatric and neurological aspects thereof. In some embodiments, a method for treating one or more of anxiety disorders, eating disorders, and headache disorders, comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. Provided herein is a method for treating an anxiety disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. Also provided herein is a method for treating an obsessive-compulsive and related disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. Also provided herein is a method for treating post-traumatic stress disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. 2026204976   25 Jun 2026 Provided herein is a method for treating a headache disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. Also provided herein is a method for treating a cluster headache in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. Also provided herein is a method for treating migraine in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. Provided herein is a method for treating an eating disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. Also provided herein is a method for treating binge-eating disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. Also provided herein is a method for treating anorexia nervosa in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. In some embodiments, the psilocybin is administered in a dosage form comprising a therapeutically effective amount of highly pure crystalline psilocybin in the form of Polymorph A, wherein the crystalline psilocybin comprises at least 90% by weight of Polymorph A. In some embodiments, the crystalline psilocybin comprises at least 95% by weight of Polymorph A. In some embodiments, the crystalline psilocybin has a chemical purity of greater than 97% by high performance liquid chromatography (HPLC), and no single impurity of greater than 1%. In some embodiments, the psilocybin is administered in a dosage form comprising a therapeutically effective amount of highly pure crystalline psilocybin in the form of Polymorph A, wherein the crystalline psilocybin has a chemical purity of greater than 97% by HPLC, and no single impurity of greater than 1%. In some embodiments, the psilocybin is administered in a dosage form comprising a therapeutically effective amount of highly pure crystalline psilocybin in 2026204976   25 Jun 2026 the form of Polymorph A, wherein the crystalline psilocybin has a chemical purity of greater than 97% by HPLC, and no single impurity of greater than 1%, further comprising a mixture of two silicified microcrystalline cellulose variants wherein the first variant has a particle size from about 45 to 80 microns and the second variant has a particle size of about 90 to 150 microns. In some embodiments, 30% or less of the microcrystalline cellulose is the first variant having a particle size from about 45 to 80 microns and about 70% or more of the microcrystalline cellulose is the second variant having a particle size of about 90 to 150 microns. In some embodiments, the psilocybin is administered in an oral dosage form. In some embodiments, the psilocybin is administered in a capsule. In some embodiments the psilocybin is administered in a tablet. In some embodiments, at least one dose of psilocybin is administered to the subject. In some embodiments, the dose of psilocybin is in the range of about 0.1 mg to about 100 mg. In some embodiments, the dose of psilocybin is about 25 mg. In some embodiments, the subject participates in at least one psychological support session before administration of the psilocybin. In some embodiments, the subject participates in at least one psychological support session after administration of the psilocybin. In some embodiments, a therapist provides psychological support to the subject for approximately 4-8 hours after administration of the psilocybin. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a numbered structural formula of psilocybin. FIG. 2A is a XRPD diffractogram of Polymorph A (GM764B). FIG. 2B is a XRPD diffractogram of Polymorph A’ (JCCA2160F). FIG. 2C is a XRPD diffractogram of Polymorph B (JCCA2160-F-TM2). FIG. 2D is a XRPD diffractogram of a Hydrate A (JCCA2157E). FIG. 2E is a XRPD diffractogram of an ethanol solvate (JCCA2158D). FIG. 2F is a XRPD diffractogram of product obtained during development of the process (CB646-E) (top) - compared to the diffractograms Polymorph A’ (JCCA2160F) (middle) and Polymorph B (JCCA2160-TM2) (bottom). FIG. 3A is a DSC and TGA thermograph of Polymorph A (GM764B). FIG. 3B is a DSC and TGA thermograph of Polymorph A’ (JCCA2160F). 2026204976   25 Jun 2026 FIG. 3C is a DSC thermograph of Polymorph B (GM748A). FIG. 3D is a DSC and TGA thermograph of Hydrate A (JCCA2157E). FIG. 3E is a DSC and TGA thermograph of ethanol solvate (JCCA2158D). FIG. 4 is a form phase diagram showing the inter-relationship of form in water-based systems. FIG. 5 is a 1H NMR (Nuclear Magnetic Resonance) spectrum of psilocybin. FIG. 6 is a 13C NMR spectrum of psilocybin. FIG. 7 is a FT-IR Spectrum of psilocybin. FIG. 8 is a Mass Spectrum of psilocybin. FIG. 9A shows a timeline of the Phase 1 exploratory study, which evaluated psilocybin treatment in healthy volunteer subjects. FIG. 9B shows the number of subjects that completed screening (Visit 1), baseline measurements (Visit 2), and drug administration (Visit 3) of the Phase 1 exploratory study. FIG. 9C shows the group sizes of the dosing sessions of the Phase 1 exploratory study. FIG. 9D shows the most frequently reported adverse events of the Phase 1 exploratory study. FIG. 9E shows the duration of adverse events of the Phase 1 exploratory study. FIG. 9F shows a graph of the Paired Associates Learning Total Errors Adjusted (PALTEA) score of the Cambridge Neuropsychological Test Automated Battery (CANTAB) over time for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 9G shows a graph of the least squares (LS) mean difference from placebo for the PALTEA score of the CANTAB over time for the psilocybin-treated subjects of the Phase 1 exploratory study. FIG. 9H shows a graph of the spatial working memory between errors (SWMBE) score of the CANTAB overtime for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 9I shows a graph of the least squares mean difference from placebo for the SWMBE score of the CANTAB over time for the psilocybin-treated subjects of the Phase 1 exploratory study. 2026204976   25 Jun 2026 FIG. 9J shows a graph of the spatial working memory strategy (SWM strategy) score of the CANTAB overtime for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 9K shows a graph of the least squares mean difference from placebo for the SWM strategy score of the CANTAB over time for the psilocybin-treated subjects of the Phase 1 exploratory study. FIG. 9L shows a graph of the Rapid Visual Information Processing A Prime (RVPA) score of the CANTAB overtime for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 9M shows a graph of the least squares (LS) mean difference of psilocybin groups (10 mg and 25 mg) compared to placebo groups overtime. Psilocybin was administered on Day 0. Data on Days 7 and Day 28 were collected remotely. Positive scores indicate psilocybin performed better than placebo. Negative scores indicate placebo performed better than psilocybin. LS means were calculated using repated-measures ANOVA and compared with placebo. *p < 0.05. Data are expressed as LS mean ± sem. FIG. 9N shows a graph of the Emotional Recognition Task percent correct (ERTPC) of the CANTAB for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 90 shows a graph of the One Touch Stockings Problems Solved on First Choice (OTSPSFC) of the CANTAB for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 9P shows a graph of the intra-extra dimensional set shift total errors (IEDYERT) of the CANTAB for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 9Q shows a graph of the CANTAB global composite score overtime for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 9R shows a graph of the least squares mean difference from placebo for the CANTAB global composite score over time for the psilocybin-treated subjects of the Phase 1 exploratory study. FIG. 9S shows a graph of the verbal fluency test for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. 2026204976   25 Jun 2026 FIG. 9T shows a graph of the digit span forward test for the psilocybin-treated and placebo-treated subjects of the Phase 1 exploratory study. FIG. 9U shows a graph of the Five Dimensional - Altered States of Consciousness (5D-ASC), which measures alterations in mood, perception, and experience of self, after administration of psilocybin or placebo in the Phase 1 exploratory study. FIG. 9V shows the difference in CANTAB composite score between “psilocybin-naive” (0, lefthand side) subjects and subjects with prior psilocybin experience (1, right-hand side). FIG. 10 shows the calsyntenin 2 (Clstn2) expression levels at 1 hour, 24 hours, and on Day 8 following a single administration of psilocybin in naive mice compared to vehicle treated animals. Two-way ANOVA repeated measures followed by Bonferroni multiple comparison test, * < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001. Data are expressed as mean ± standard deviation (SD). FIG. 11 shows the receptor tyrosine-protein kinase erbB-4 (Erbb4) expression levels at 1 hour, 24 hours, and on Day 8 following a single administration of psilocybin in naive mice compared to vehicle treated animals. Two-way ANOVA repeated measures followed by Bonferroni multiple comparison test, * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001. Data are expressed as mean ± SD. FIG. 12 shows glucagon (Gcg) expression levels at 1 hour, 24 hours, and on Day 8 following a single administration of psilocybin in naive mice compared to vehicle treated animals.. Twoway ANOVA repeated measures followed by Bonferroni multiple comparison test, * p < 0.05, “ p < 0.01, *** p < 0.001, **** p < 0.0001. Data are expressed as mean ± SD. FIG. 13 shows chemokine ligand 1 (Cxcll) expression levels at 1 hour, 24 hours, and on Day 8 following a single administration of psilocybin in naive mice compared to vehicle treated animals.. Two-way ANOVA repeated measures followed by Bonferroni multiple comparison test, * p < 0.05, “ p< 0.01, *** p < 0.001, **** p < 0.0001. Data are expressed as mean ± SD. FIG. 14 shows Activin A Receptor Like Typel (Acvrll) expression levels at 1 hour, 24 hours, and on Day 8 following a single administration of psilocybin in naive mice compared to vehicle treated animals. Two-way ANOVA repeated measures followed by Bonferroni multiple comparison test, * p < 0.05, “p< 0.01, *** p < 0.001, **** p < 0.0001. Data are expressed as mean ± SD. 2026204976   25 Jun 2026 FIG. 15 illustrates the experimental conditions of the marble burying test. FIG. 16 shows the number of buried marbles 1 hour following psilocybin (PS) treatment. Fluoxetine (Fluox, 30 min pre-treatment) was used as a positive control. Data are expressed as mean ± SEM. Statistical significance was determined using an unpaired t-test for vehicle FL and fluoxetine, ****p < 0.0001. Statistical significance was determined using one-way ANOVA and Tukey’s correction test for vehicle PS and psilocybin, **p < 0.001. FL = fluoxetine; PS = psilocybin. FIG. 17 is a graph showing the changes in amount of wakefulness, non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep over 24 hours following psilocybin administration. Black arrow denotes dosing time. The grey background denotes dark phase (awake phase for rodents). FIG. 18 is a graph showing the amount of wakefulness, NREM sleep and REM sleep 1 - 7 hours (light phase, sleep phase for rodents) post-dosing with psilocybin. Statistical analysis by repeated measures ANOVA, *p<0.05. FIG. 19 is a graph showing the amount of wakefulness, NREM sleep and REM sleep 11-19 hours (dark phase) post-dosing with psilocybin. Statistical analysis by repeated measures ANOVA, *p<0.05. FIG. 20 is a graph showing the changes in the absolute and relative wakefulness electroencephalogram (EEG) power with frequency, and the amount of gamma oscillations. Statistical analysis by repeated measures ANOVA, *p<0.05. FIG. 21 is a graph showing the changes in the absolute and relative wakefulness,NREM and REM sleep EEG power with frequency. FIG. 22 shows the number of entries into the open arms (left panel) and the time spent in open arms (right panel) 2 hours post-administration of psilocybin. Diazepam was used as a positive control. Data are expressed as mean ± SEM. Statistical significance was determined using one-way ANOVA and Fisher’s Least Significant Difference for pairwise comparison, *p < 0.05 2026204976   25 Jun 2026 FIG. 23 shows the number of entries into the open arms (left panel) and the time spent in open arms (right panel) 24 hours post-administration of psilocybin. Diazepam was used as a positive control. FIG. 24 shows the change in social connectedness scale score following administration of psilocybin to healthy human volunteers. Two-way ANOVA repeated measures with Bonferroni correction, “ p < 0.01, # < 0.05. Data are expressed as mean ± sem. FIG. 25 shows the reaction time of healthy human volunteers in the facial expression recognition task following administration of psilocybin. One-way ANOVA repeated measures, * p < 0.05, “ p < 0.01, *** p < 0.001. Data are expressed as mean ± sem. FIG. 26 shows the activation of the left amygdala as represented by the change of mean Z in the left amygdala in healthy volunteers following administration of psilocybin. One-way ANOVA repeated measures, * p < 0.05, ** p < 0.01, *** p < 0.001. Data are expressed as mean ± sem. FIG. 27 illustrates the timeline for the chronic cluster headaches study. FIG. 28 shows a timeline of visits for a Phase 2 investigational trial for evaluating the use of psilocybin for the treatment of anorexia. FIG. 29 shows a timeline of an in vivo study that evaluates the use of psilocybin for the treatment of binge eating. FIG. 30 shows the amount of chow, chocolate and total food that were consumed 1 hour following administration of 1 mg / kg psilocybin, 3mg / kg psilocybin, 10 mg / kg psilocybin, saline vehicle, or lisdexamfetamine (LDX). Multiple comparisons against vehicle are by Williams’ test for Psilocybin and the multiple t test for LDX. **p<0.01, ***p<0.001. Data are expressed as adjusted mean ± sem. FIG. 31 shows the amount of chow, chocolate and total food consumed 24 hours following administration of 1 mg / kg psilocybin, 3mg / kg psilocybin, 10 mg / kg psilocybin, saline vehicle, or LDX. Multiple comparisons against vehicle are by Williams’ test for Psilocybin and the multiple t test for LDX. *p<0.05, ***p<0.001. Data are expressed as adjusted mean ± sem. 2026204976   25 Jun 2026 FIG. 32 shows effect of psilocybin on 24 hour food intake compared to vehicle / binge treated group. One-way ANOVA followed by Williams' test and multiple t-test for f or LDX, * p < 0.05, “ p < 0.01, and *** p < 0.001. Data are expressed as adjusted mean ± sem. Arrows indicate binge days. FIG. 33 shows the effect of psilocybin on average 24 hour food intake. One-way ANOVA followed by Williams' test and multiple t-test for f or LDX, * p < 0.05, “ p < 0.01, and *** p < 0.001. Data for vehicle / no chocolate expressed as mean ± sem, all other groups are expressed as adjusted mean ± sem. FIG. 34 shows the effect of psilocybin on body weight change compared to vehicle I binge treated group. One-way ANOVA followed by Williams' test and multiple t-test for f or LDX, * p < 0.05, “ p< 0.01, and *** p < 0.001. Data for vehicle I no chocolate are expressed as mean ± sem, all other groups are expressed as adjusted mean ± sem. FIG. 35 shows the effect of psilocybin on the Life Changes Inventory Self-Acceptance Score in a healthy volunteer study. Mixed model for repeated measures was used to calculate least squares (LS) means, followed by pairwise comparison with placebo group. *** p < 0.001. Data are presented as LS mean ± sem. DETAILED DESCRIPTION Definitions Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure 2026204976   25 Jun 2026 belongs. The terminology used in the detailed description herein is for the purpose of describing particular embodiments only and is not intended to be limiting. The singular forms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the term “about” as used herein when referring to a measurable value such as a dose, time, temperature, and the like, is meant to encompass variations of ± 20%, ± 10%, ± 5%, ± 1%, ± 0.5%, or even ± 0.1% of the specified amount. The phrase “and / or,” as used herein in the specification and in the embodiments, should be understood to mean “either or both” of the elements so conjoined, i.e., elements that are conjunctively present in some cases and disjunctively present in other cases. Multiple elements listed with “and / or” should be construed in the same fashion, i.e., “one or more” of the elements so conjoined. Other elements can optionally be present other than the elements specifically identified by the “and / or” clause, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, a reference to “A and / or B”, when used in conjunction with open-ended language such as “comprising” can refer, in one embodiment, to A only (optionally including elements other than B); in another embodiment, to B only (optionally including elements other than A); in yet another embodiment, to both A and B (optionally including other elements); etc. As used herein in the specification and in the embodiments, “or” should be understood to have the same meaning as “and / or” as defined above. For example, when separating items in a list, “or” or “and / or” shall be interpreted as being inclusive, i.e., the inclusion of at least one, but also including more than one, of a number or list of elements, and, optionally, additional unlisted items. Only terms clearly indicated to the contrary, such as “only one of’ or “exactly one of,” or, when used in the embodiments, “consisting of,” will refer to the inclusion of exactly one element of a number or list of elements. In general, the term “or” as used herein shall only be interpreted as indicating exclusive alternatives (i.e. “one or the other but not both”) when preceded by terms of exclusivity, such as “either,” “one of,” “only one of,” or “exactly one of.” “Consisting essentially 2026204976   25 Jun 2026 of,” when used in the embodiments, shall have its ordinary meaning as used in the field of patent law. As used herein in the specification and in the embodiments, the phrase “at least one,” in reference to a list of one or more elements, should be understood to mean at least one element selected from any one or more of the elements in the list of elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list of elements. This definition also allows that elements can optionally be present other than the elements specifically identified within the list of elements to which the phrase “at least one” refers, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, “at least one of A and B” (or, equivalently, “at least one of A or B,” or, equivalently “at least one of A and / or B”) can refer, in one embodiment, to at least one, optionally including more than one, A, with no B present (and optionally including elements other than B); in another embodiment, to at least one, optionally including more than one, B, with no A present (and optionally including elements other than A); in yet another embodiment, to at least one, optionally including more than one, A, and at least one, optionally including more than one, B (and optionally including other elements); etc. Unless the context indicates otherwise, it is specifically intended that the various features described herein can be used in any combination. As used herein, the terms “reduce,” “decrease,” “lessen” and similar terms mean a decrease of at least about 10%, about 15%, about 20%, about 25%, about 35%, about 50%, about 75%, about 80%, about 85%, about 90%, about 95%, about 97%, or more. As used herein, the terms “improve,” “increase,” “enhance,” and similar terms indicate an increase of at least about 10%, about 15%, about 20%, about 25%, about 50%, about 75%, about 100%, about 150%, about 200%, about 300%, about 400%, about 500%, or more. Reference to a particular numerical value includes at least that particular value, unless the context clearly dictates otherwise. When a range of values is expressed, another embodiment includes from the one particular value and / or to the other particular value. Further, reference to values stated in ranges include each and every value within that range. All ranges are inclusive and combinable. 2026204976   25 Jun 2026 As used herein, “substantially absent” with reference to XRPD diffractogram peak means the peak has a relative intensity compared to a reference peak present in the diffractogram of less than about 5%, less than about 4%, less than about 3%, less than about 2%, or less than about 1% of the intensity of the reference peak, or that the peak is not detectable. XRPD diffractograms and XRPD peak positions may be acquired using Cu Ka radiation. DSC thermograms and TGA thermograms may be acquired using a heating rate of 20°C / min. As used herein, the term “diffusion tensor imaging” or “DTI” refers to a technique that detects how water travels along the white matter tracts in the brain. In some embodiments, DTI is used to characterize microstructural changes associated with mental disorders (e.g., major depressive disorder) and / or the response to treatment in subjects with mental disorders. All disease and disorders listed herein are defined as described in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), published by the American Psychiatric Association, or in International Classification of Diseases (ICD), published by the World Health Organization. As used herein the term “subject” and “patient” are used interchangeably. As used herein, “treating” and like terms refer to reducing the severity and / or frequency of one or more symptoms, eliminating one or more symptoms and / or the underlying cause of said symptoms, reducing the frequency or likelihood of one or more symptoms and / or their underlying cause, delaying, preventing and / or slowing the progression of diseases and / or disorders and improving or remediating damage caused, directly or indirectly, by the diseases and / or disorders. As used herein, “therapeutically-effective dose” means a dose sufficient to achieve the intended therapeutic purpose, such as, to alleviate a sign or symptom of a disease or disorder in a subject. As used herein a “precursor” and / or “derivative” of psilocybin includes, but is not limited to, prodrugs of psilocybin, prodrugs of an active metabolite of psilocybin, and an active metabolite of psilocybin. 2026204976   25 Jun 2026 As used herein, a subject that is “psilocybin-naive” has not previously been exposed to psilocybin. As used herein, the following Medical Dictionary for Regulatory Activities (MedDRA) terms are considered to be adverse events that are psychedelic in nature: altered mood, altered state of consciousness, autoscopy, delusional perception, disinhibition, dissociation, dissociative identity disorder, dreamy state, emotional disorder, euphoric mood, feeling abnormal, hallucination, hyperacusis, hyperaesthesia, hypoaesthesia, illusion, paranoia, parosmia, photophobia, sensory disturbance, time perception altered, thinking abnormal, synaesthesia, substance-induced psychotic distress, and somatic hallucination. As used herein, the term “anxiety disorder” refers to a state of apprehension, uncertainty, and / or fear resulting from the anticipation of an event and / or situation. Non-limiting examples of anxiety disorders include acute stress disorder, anxiety due to a medical condition, generalized anxiety disorder, panic disorder, panic attack, a phobia, post-traumatic stress disorder, obsessivecompulsive disorder, separation anxiety disorder, social anxiety disorder, substance-induced anxiety disorder, or selective mutism. As used herein, the term “post traumatic stress disorder” refers to a condition developed after experiencing and / or witnessing a traumatic event or learning that a traumatic event has happened to a loved one. Non-limiting examples of traumatic events include exposure to war, rape or sexual violence, a physical attack, disease, a mugging, childhood physical or sexual violence, kidnapping or being taken hostage, terrorist attacks, torture, nature disasters and / or severe accidents. As used herein, an “obsessive-compulsive and related disorder” refers to a condition that involves obsessions or compulsions. Non-limiting examples of obsessive-compulsive and relating disorder is obsessive compulsive disorder, body dysmorphic disorder, hoarding disorder, dermatillomania, trichotillomania, excoriation, substance-induced obsessive compulsive and related disorder, or an obsessive-compulsive disorder due to another medical condition, or a combination thereof. As used herein, the term “eating disorder” refers to any of a range of psychological disorders characterized by abnormal or disturbed eating habits. Non-limiting examples of eating disorders include pica, anorexia nervosa, bulimia nervosa, rumination disorder, 2026204976   25 Jun 2026 avoidant / restrictive food intake disorder, binge-eating disorder, other specified feeding or eating disorder, unspecified feeding creating disorder, or combinations thereof. As used herein, the term “headache disorder” refers to a disorder characterized by recurrent headaches. As used herein, an “antidepressant” refers to any drug used to alleviate depression. Nonlimiting examples of antidepressants include In some embodiments, an antidepressant may include, but are not limited to, one or more of the following antidepressants: adatanserine hydrochloride; adinazolam; adinazolam mesylate; allaproclate; alletamine hydrochloride; amedalin hydrochloride; amitriptyline hydrochloride; amoxapine; aftazapine maleate; amitriptyline; azaroxane fumarate; azepindol; azipramine hydrochloride; bifenanol hydrochloride; bupropion hydrochloride; butacetin; butriftyline hydrochloride; caroxazone; cartazolate; cyclazindol; cydoxepin hydrochloride; cilobamin mesylate; citalipram; clodazone hydrochloride; clomipramine hydrochloride; cotinine fumarate; cyclindol; cyphenamine hydrochloride; cyproridol hydrochloride; cyproxymid; darledin tosylate; dapoxetine hydrochloride; dazadrol maleate; dazefinyl hydrochloride; desipramine hydrochloride; dexamidazole; deximaphene; dibenzepine hydrochloride; dioxadol hydrochloride; dothipine hydrochloride; doxepin hydrochloride; duloxetine hydrochloride; eclanamine maleate; encyclates; etoferidone hydrochloride; pantridone hydrochloride; femetosol hydrochloride; penmetamide; pezolamine fumarate; fluorothracene hydrochloride; fluoxetine; fluoxetine hydrochloride; fluparoxane hydrochloride; gamma pexin; guanoxyphen sulfate; imafen hydrochloride; imilox hydrochloride; imipramine hydrochloride; indeloxazine hydrochloride; intriptyline hydrochloride; ifrindol; isocacarazide; ketipramine fumarate; lofepramine hydrochloride; lortalamine; mapprotilin; mapprotiline hydrochloride; melitracene hydrochloride; milacemide hydrochloride; minarin hydrochloride; mirtazapine; moclobemide; modal sulphate; napaktadine hydrochloride; napamezol hydrochloride; nefazodone hydrochloride; nisoxetine; nitroputam hydrochloride; nomifensin maleate; nortriptyline hydrochloride; octriptyline phosphate; opipramol hydrochloride; oxaprotiline hydrochloride; oxypertin; paroxetine; phenelazine sulfate; pyrandamine hydrochloride; piezotiline; pridepine hydrochloride; prolinetane hydrochloride; protriptyline hydrochloride; quipazine maleate; rolycyrine; ceproxetine hydrochloride; sertraline hydrochloride; sibutramine hydrochloride; sulfides; hydrotosol; tamethalin hydrochloride; tampramine fumarate; tandamine hydrochloride; thiazime hydrochloride; tozalinone; geocetin hydrochloride; trazodone hydrochloride; trebenzomine hydrochloride; trimimipramine; trimimipramine maleate; venlafaxine hydrochloride; biloxazine hydrochloride; gimeldine hydrochloride; and zometapine. 2026204976   25 Jun 2026 Psilocybin In some embodiments, a method of treatment comprises the administration of a therapeutically effective amount of psilocybin, a prodrug of psilocybin, an active metabolite of psilocybin, or a prodrug of an active metabolite of psilocybin to a subject in need thereof as 5 described herein. In some embodiments, a method of treatment comprises the administration of a therapeutically effective amount of psilocybin as described herein. In some embodiments, a method of treatment comprises the administration of a therapeutically effective amount of psilocin as described herein. Some embodiments comprise psilocybin, a prodrug of psilocybin, an active metabolite of psilocybin, or a prodrug of an active metabolite of psilocybin for use in the treatment 10 of an indication as described herein. Some embodiments comprise psilocybin for use in the treatment of an indication as described herein. Some embodiments comprise psilocin for use in the treatment of an indication as described herein. Some embodiments comprise the use of psilocybin, a prodrug of psilocybin, an active metabolite of psilocybin, or a prodrug of an active metabolite of psilocybin in the manufacture of a medicament for the treatment of an indication as 15 described herein. A numbered structural formula of psilocybin is shown in FIG. 1. Novel polymorphs and hydrates of psilocybin, along with the preparation and formulations thereof are disclosed in U.S Application No. US2019 / 0119310 A1, which is incorporated by reference herein in its entirety. US2019 / 0119310 discloses a number of formulations and the challenges of formulating psilocybin 20 due to e.g. its hygroscopicity and poor flow characteristics. US2019 / 0119310 also discloses the importance of a controlled aqueous crystallisation process. In some embodiments, the psilocybin comprises crystalline psilocybin in the form Polymorph A or Polymorph A’, as described herein, the crystalline psilocybin exhibits peaks in an X-ray powder diffraction (XRPD) diffractogram at 11.5, 12.0 and 14.5 °20±O.1°20. In some 25 embodiments, the crystalline psilocybin further exhibits at least one peak in the XRPD diffractogram at 19.7, 20.4, 22.2, 24.3 or 25.7 °20±O.1°20. Illustrative XRPD diffractograms are provided as FIGS. 2A and 2B. In some embodiments, the crystalline psilocybin exhibits an endothermic event in a DSC thermogram having a first onset temperature of between 145°C and 165°C and a second onset temperature of between 205°C and 220°C. Illustrative DSC 30 thermograms are provided as FIGS. 3A and 3B. Polymorph A 2026204976   25 Jun 2026 In some embodiments, the present disclosure provides crystalline psilocybin in the form Polymorph A, characterized by one or more of: • peaks in an XRPD diffractogram at 11.5, 12.0,14.5, and 17.5, °20±O.1°20; • peaks in an XRPD diffractogram at 11.5, 12.0, 14.5 and 17.5, °20±O.1°20, further characterized by at least one further peak at 19.7, 20.4, 22.2, 24.3 or 25.7 °20±O.1°20; • an XRPD diffractogram as substantially illustrated in FIG. 2A; or • an endothermic event in a DSC thermogram having an endothermic event in a DSC thermogram having a first onset temperature of between 145°C and 165°C and a second onset temperature of between 205°C and 220°C substantially as illustrated in FIG. 3A. In some embodiments, the peak at 17.5 °20±O.1°20 has a relative intensity compared to the peak at 14.5 °20±O.1°20 of at least 5%, at least 6%, at least 7%, at least 8%, at least 9%, or at least 10%. In some embodiments, the present disclosure provides crystalline psilocybin in the form Polymorph A, characterized by one or more of: • peaks in an XRPD diffractogram at 11.5, 12.0,14.5, and 17.5, °20±O.2°20; • peaks in an XRPD diffractogram at 11.5, 12.0, 14.5 and 17.5, °20±O.2°20, further characterized by at least one further peak at 19.7, 20.4, 22.2, 24.3 or 25.7 °20±O.2°20; • an XRPD diffractogram as substantially illustrated in FIG. 2A; or • an endothermic event in a DSC thermogram having an endothermic event in a DSC thermogram having a first onset temperature of between 145°C and 165°C and a second onset temperature of between 205°C and 220°C substantially as illustrated in FIG. 3A. In some embodiments, the crystalline psilocybin of Polymorph A exhibits an XRPD diffractogram having at least 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, or 17 of the peaks listed in Table 1, or equivalent peaks within about ±0.1 °20 of the peaks listed in Table 1. In some embodiments, the crystalline psilocybin of Polymorph A exhibits an XRPD diffractogram having at least 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, or 17 of the peaks listed in Table 1, or 2026204976   25 Jun 2026 equivalent peaks within about ±O.2°20 of the peaks listed in Table 1. In some embodiments, Polymorph A exhibits a peak at 17.5 °20±O.1°20 that is substantially absent in Polymorph A’. In some embodiments, Polymorph A exhibits a peak at 17.5 °20±O.2°20 that is substantially absent in Polymorph A’. Table 1 - XRPD peak positions for Polymorph A Position [°2Th.] Relative Intensity [%] 5.6 8.42 11.5 13.05 12.0 26.45 14.5 100.00 17.5 10.71 19.7 37.29 20.4 20.06 22.2 17.83 23.2 6.99 24.3 17.93 25.7 16.40 26.8 3.15 27.8 4.54 29.7 9.53 31.2 6.51 32.6 2.45 33.7 1.75 In some embodiments, crystalline psilocybin Polymorph A exhibits XRPD diffractogram peaks at 11.5, 12.0, 14.5, and 17.5°20±O.1°20. In some embodiments, crystalline psilocybin 10 Polymorph A exhibits at least one additional peak appearing at 19.7, 20.4, 22.2, 24.3 or 25.7°20±O.1°20. In some embodiments, crystalline psilocybin Polymorph A exhibits at least two additional peaks appearing at 19.7, 20.4, 22.2, 24.3 or 25.7 °20±O.1°20. In some embodiments, crystalline psilocybin Polymorph A exhibits at least three additional peaks appearing at 19.7, 20.4, 22.2, 24.3 or 25.7 °20±O.1°20. In some embodiments, crystalline psilocybin Polymorph A exhibits 15 an XRPD diffractogram substantially the same as the XRPD diffractogram shown in FIG. 2A. 2026204976   25 Jun 2026 In some embodiments, crystalline psilocybin Polymorph A is characterized by XRPD diffractogram peaks at 14.5 and 17.5°20±O.1°20 with the peak at 17.5°20 having an intensity which is at least about 5%, at least about 6%, at least about 7%, at least about 8%, at least about 9%, or at least about 10% of the intensity of the peak at 14.5°20. In some embodiments, the crystalline psilocybin Polymorph A exhibits no peak at 10.1 — that is, the peak at 10.1 is absent or substantially absent. In some embodiments, crystalline psilocybin Polymorph A is characterized by an endothermic event in a DSC thermogram having a first onset temperature of between 145°C and 165°C such as between 145 and 160°C, or such as between 145 and 155°C and a second onset temperature of between 205 and 220°C, such as between 210 and 220°C, such as between 210 and 218°C, or such as between 210 and 216°C. In some embodiments, crystalline psilocybin Polymorph A exhibits an endothermic event in a DSC thermogram having an onset temperature of between about 205 and about 220°C, between about 210 and about 220°C, between about 210 and about218°C, or between about210 and about216°C. In some embodiments, crystalline psilocybin Polymorph A further exhibits an endothermic event in the DSC thermogram having an onset temperature of between about 145 and about 165°C, between about 145 and about 160°C, or between about 145 and about 155°C. In some embodiments, crystalline psilocybin Polymorph A exhibits an endothermic event having an onset temperature of between about 205 and about 220°C, between about 210 and about 220°C, between about 210 and about 218°C, or between about 210 and about 216°C; and an endothermic event having an onset temperature of between about 145 and about 165°C, between about 145 and about 160°C, between about 145 and about 155°C, in a DSC thermogram. In some embodiments, crystalline psilocybin Polymorph A exhibits a DSC thermogram substantially the same as the DSC thermogram in FIG. 3A. In some embodiments, crystalline psilocybin Polymorph A exhibits a water content of <0.5% w / w, <0.4% w / w, <0.3% w / w, <0.2% w / w, or <0.1% w / w. The water content of a crystalline compound can be determined by known methods, for example Karl Fischer Titration. In some embodiments, crystalline psilocybin Polymorph A exhibits <0.5% w / w loss, <0.4% w / w, <0.3% w / w, <0.2% w / w, or <0.1% w / w in the TGA thermogram between ambient temperature, e.g., about 25°C, and 200°C. In some embodiments, crystalline psilocybin Polymorph A loses less than 2% by weight, less than 1% by weight, or than 0.5% by weight in a loss on drying test, e.g., a loss on drying test performed at 70°C. 2026204976   25 Jun 2026 In some embodiments, crystalline psilocybin Polymorph A is a highly pure crystalline form of Polymorph A, for example, the in a loss on drying test psilocybin comprises at least 90%, at least 95%, at least 99%, or at least 99.5% by weight crystalline psilocybin of Polymorph A. In some embodiments, crystalline psilocybin Polymorph A is a white to off-white solid. In some embodiments, crystalline psilocybin Polymorph A is chemically pure, for example the psilocybin has a chemical purity of greater than 97%, 98%, or 99% by HPLC. In some embodiments, crystalline psilocybin Polymorph A has no single impurity of greater than 1%, greater than 0.5%, greater than 0.4%, greater than 0.3%, or greater than 0.2% e.g., the impurity phosphoric acid as measured by 31P NMR, or the impurity psilocin measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A has a chemical purity of greater than 97 area%, greater than 98 area%, or greater than 99 area% by HPLC. In some embodiments, crystalline psilocybin Polymorph A has no single impurity greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A does not contain psilocin at a level greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A does not contain phosphoric acid at a level greater than 1 weight%, greater than 0.5 weight%, greater than 0.4 weight%, 0.3 weight%, or greater than 0.2 weight%, as measured by 31P NMR. In some embodiments, crystalline psilocybin Polymorph A has a chemical assay of at least 95 weight%, at least 96 weight%, or at least 98 weight%. Methods of Manufacturing Crystalline Psilocybin Polymorph A. In another embodiment, the disclosure provides a method for large scale manufacture of psilocybin characterized in that the method comprises subjecting psilocybin to a water crystallization step, with controlled drying, to produce crystalline psilocybin Polymorph A. In another embodiment, the disclosure provides a method for large scale manufacture of psilocybin characterized in that the method comprises subjecting psilocybin to a water crystallization step, with controlled drying, to produced crystalline psilocybin Polymorph A with an XRPD diffractogram as illustrated in FIG. 2A and a DSC and TGA thermograph as illustrated in FIG. 3A. In another embodiment, the disclosure provides a method for large-scale manufacture of psilocybin characterized in that the method comprises subjecting psilocybin to a water 2026204976   25 Jun 2026 WO 2020 / 212951                                                 PCT / IB2020 / 053687 21 crystallization step, with controlled drying, to produce a high purity crystalline psilocybin -Polymorph A with an XRPD diffractogram as illustrated in FIG. 2A and a DSC thermograph as illustrated in FIG. 3A. In another embodiment of the disclosure, psilocybin is recrystallized in about 10-20 volumes of water, heated with agitation to a temperature of at least 70°C, polish filtered with a suitable cut off (typically, below 5 pm), seeded at a temperature of about 70°C, and cooled in a controlled manner to about 5°C over a period of more than 2 hours. In some embodiments, psilocybin recrystallization comprises controlled cooling which drops the temperature by about 5 °C -15 °C an hour, more preferably about 10°C an hour. In certain embodiments, the polish filter step is done through an appropriately sized filter such as, but not limited to, a 1,2pm in line filter. In some embodiments, agitation is by stirring at about 400-500 rpm, typically about 450 rpm. In some embodiments, the psilocybin is dissolved in water heated to no more than 90°C. In some embodiments the psilocybin is dissolved in water heated to no more than 85°C. Without being bound by any particular mechanism, this dissolution step is intended to solubilize psilocybin whilst also minimizing the formation of hydrolysis products. In some embodiments, the psilocybin solution is stirred to speed the solubilization and reduce the time that the solution is at a high temperature, namely one at or around 80°C, or higher. In some embodiments, the seed is psilocybin Hydrate A. In one embodiment, 0.1% weight or less of seed is added to the process. In some embodiments, the psilocybin the crystalline psilocybin is isolated by vacuum filtration. In some embodiments, the isolated crystals are dried in vacuo at a temperature of at least 30°C, such as between 30 and 50°C, or such as between 40 and 50°C. In some embodiment, the isolated crystals are dried in vacuo for at least 10 hours, such as between 12 and 18 hours, or such as about 30 hours. In some embodiments, the isolated crystals are dried in vacuo at a temperature of at least 30°C, such as between 30 and 50°C, or such as between 40 and 50°C, 2026204976   25 Jun 2026 for at least 10 hours, such as between 12 and 18 hours, or such as about 30 hours. In some embodiments, the isolated crystals are dried until the isolated crystals lose less than 2% weight in a loss on drying test, such as less than 0.5% weight. In some embodiments, the isolated crystals are washed, several times, in water and dried 5 in vacuo at about 50°C for at least 12 hours. In some embodiments, the crystals obtained are typically relatively large (range 50 to 200 microns) and uniform when viewed under the microscope x 10. In contrast, crystals obtained without controlled cooling which are much smaller in size (typically 5 to 50microns) when viewed under the microscope x 10. 10          In some embodiments, there is provided Psilocybin obtained by the method of crystallization described herein. In some embodiments, there is provided a pharmaceutical formulation comprising psilocybin polymorph A obtained by the method of crystallization described herein. In some embodiments, psilocybin manufactured prior to crystallization may be produced 15 using one of the following methods: synthetic or biological, e.g. by fermentation or obtained by extraction from mushrooms. In some embodiments, psilocybin manufactured prior to crystallization is manufactured according to all or some of the methods described in U.S Application No. US2019 / 0119310 A1, which is incorporated by reference herein in its entirety. 2026204976   25 Jun 2026 Polymorph A ’ The present disclosure provides crystalline psilocybin in the form of Polymorph A’, characterized by one or more of: (i) peaks in an XRPD diffractogram at 11.5, 12.0 and 14.5 °20±O.1°20, but absent or substantially absent of a peak at 17.5 °20±O.1°20; (ii) peaks in an XRPD diffractogram at 11.5, 12.0 and 14.5 °20±O.1°20, but absent or substantially absent of a peak at 17.5 °20±O.1°20, further characterized by at least one further peak at 19.7, 20.4, 22.2, 24.3 or25.7 °20±O.1°20; (iii) an XRPD diffractogram as substantially illustrated in Fig. 2B; or (iv) an endothermic event in a DSC thermogram having a first onset temperature of between 145°C and 165°C and a second onset temperature of between 205°C and 220°C substantially as illustrated in FIG. 3B. In some embodiments, the crystalline psilocybin comprises crystalline psilocybin Polymorph A’. Crystalline psilocybin Polymorph A’ exhibits peaks in an XRPD diffractogram at 11.5, 12.0 and 14.5 °20±O.1°20, but absent or substantially absent of a peak at 17.5 °20±O.1°20. In some embodiments, crystalline psilocybin Polymorph A’ further exhibits 1,2, 3, 4, or 5 peaks selected from 19.7, 20.4, 22.2, 24.3 or 25.7 °20±O.1°20. An illustrative XRPD diffractogram for Polymorph A’ is provided as FIG. 2B. An illustrative DSC thermogram having an onset temperature of between 205 and 220°C for Polymorph A’ is provided as FIG. 3B. In some embodiments, psilocybin Polymorph A’ exhibits an XRPD diffractogram as summarized in Table 2. In some embodiments, crystalline psilocybin Polymorph A’ exhibits at least 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,22, 23, 24, or 25 peaks listed of Table B or equivalent peaks within about ±0.1 °20, and absent or substantially absent peak at 17.5 °20±O.1°20. Table 2 - XRPD peak positions for Polymorph A’ Position [°2Th.] Relative Intensity [%] 5.5 4.89 10.1 4.09 11.5 22.05 2026204976   25 Jun 2026 Position [°2Th.] Relative Intensity [%] 12.0 22.77 14.5 100.00 14.9 11.29 17.5 1.08 18.7 2.44 19.4 23.02 19.6 33.70 20.3 17.01 21.1 12.08 21.6 8.51 22.2 15.54 22.6 8.78 23.1 10.11 24.3 21.83 25.1 4.36 25.8 15.40 26.3 4.28 26.8 2.86 27.8 5.96 28.6 1.91 29.7 10.56 31.1 7.35 32.6 3.72 33.8 1.54 In some embodiments, crystalline psilocybin Polymorph A’ exhibits XRPD diffractogram peaks at 11.5, 12.0, and 14.5°20±O.1°20 but substantially absent of a peak at 17.5 °20±O.1°20. In some embodiments, crystalline psilocybin Polymorph A’ further exhibits at least one additional 5 peak appearing at 19.7, 20.4, 22.2, 24.3, or 25.7 °20±O.1°20. In some embodiments, crystalline psilocybin Polymorph A’ exhibits at least two additional peaks appearing at 19.7, 20.4, 22.2, 24.3, or 25.7 °20±O.1°20. In some embodiments, crystalline psilocybin Polymorph A’ exhibits and is distinguished from Polymorph A by the presence of a peak appearing at 10.1 °20±O.1°20. In yet 2026204976   25 Jun 2026 a further embodiment, crystalline psilocybin Polymorph A’ exhibits an XRPD diffractogram substantially the same as the XRPD diffractogram shown in FIG. 2B. In some embodiments, crystalline psilocybin Polymorph A’ exhibits XRPD diffractogram peaks at 14.5 and 17.5°20±O.1°20, wherein the intensity of the peak at 17.5°20 is less than 5%, less than 4%, less than 3%, less than 2%, or less than 1% of the intensity of the peak at 14.5°20. In some embodiments, crystalline psilocybin Polymorph A’ exhibits XRPD diffractogram peaks at 10.1 and 14.5°20±O.1°20, wherein the intensity of the peak at 1O.1°20 is at least 1%, at least 2%, at least 3%, or at least 4% of the intensity of the peak at 14.5°20. In some embodiments, crystalline psilocybin Polymorph A’ is characterized by an endothermic event in a DSC thermogram having a first onset temperature of between 145°C and 165°C such as between 145 and 160°C, or such as between 145 and 155°C and a second onset temperature of between 205 and 220°C, such as between 210 and 220°C, such as between 210 and 218°C, or such as between 210 and 216°C. In some embodiments, crystalline psilocybin Polymorph A’ is characterized by an endothermic event in a DSC thermogram having an onset temperature of between about 205 and about 220°C, between about 210 and about 220°C, between about 210 and about 218°C, or between about 210 and about 216°C. In some embodiments, crystalline psilocybin Polymorph A’ exhibits an endothermic event in the DSC thermogram having an onset temperature of between about 145 and about 165°C, between about 145 and about 160°C, or between about 145 and about 155°C. In some embodiments, crystalline psilocybin Polymorph A’ exhibits an endothermic event having an onset temperature of between about 205 and about 220°C, between about 210 and about 220°C, between about 210 and about 218°C, or between about 210 and about 216°C, and an endothermic event having an onset temperature of between about 145 and about 165°C, between about 145 and about 160°C, or between about 145 and about 155°C, in a DSC thermogram. In some embodiments, crystalline psilocybin Polymorph A’ exhibits a DSC thermogram substantially the same as the DSC thermogram in FIG. 3B. In some embodiments, crystalline psilocybin Polymorph A’ exhibits a water content of <0.5% w / w, <0.4% w / w, <0.3% w / w, <0.2% w / w, or <0.1% w / w. Methods to determine the water content of a crystalline compound are known, for example Karl Fischer Titration. In some embodiments, crystalline psilocybin Polymorph A’ exhibits <0.5% w / w loss, <0.4% w / w, <0.3% w / w, <0.2% w / w, <0.1% w / w in the TGA thermogram between ambient temperature, e.g., 25°C, 2026204976   25 Jun 2026 WO 2020 / 212951                                                 PCT / IB2020 / 053687 26 and 200°C. In some embodiments, crystalline psilocybin Polymorph A’ loses less than 2% by weight, less than 1% by weight, or less than 0.5% by weight in a loss on drying test. In some embodiments, the loss on drying test is performed at 70°C. In some embodiments, crystalline psilocybin Polymorph A’ is a highly pure crystalline form of Polymorph A’. In some embodiments, the crystalline psilocybin comprises at least 90%, 95%, 99%, or 99.5% by weight of Polymorph A’. In some embodiments, crystalline psilocybin Polymorph A’s is a white to off white solid. In some embodiments, crystalline psilocybin Polymorph A’ is chemically pure, for example the psilocybin has a chemical purity of greater than 97%, greaterthan 98%, orthan 99% by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ has no single impurity of greaterthan 1% or greater than 0.5%, e.g., the impurity phosphoric acid as measured by 31P NMR or the impurity psilocin as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ has a chemical purity of greater than 97 area%, greater than 98 area%, or greater than 99 area% by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ has no single impurity greater than 1 area% or greater than 0.5 area%, e.g., as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ does not contain psilocin at a level greaterthan 1 area% or greater than 0.5 area% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ does not contain phosphoric acid at a level greater than 1 weight% or greaterthan 0.5 weight% as measured by 31P NMR. In some embodiments, crystalline psilocybin Polymorph A’ has a chemical assay of at least 95 weight%, at least 96 weight%, or at least 98 weight%. In some embodiments, crystalline psilocybin Polymorph A’ is chemically pure, for example the psilocybin has a chemical purity of greater than 97%, 98%, or 99% by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ has no single impurity of greater than 1%, greaterthan 0.5%, greaterthan 0.4%, greaterthan 0.3%, or greater than 0.2% e.g., the impurity phosphoric acid as measured by 31P NMR, or the impurity psilocin measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ has a chemical purity of greaterthan 97 area%, greater than 98 area%, or greater than 99 area% by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ has no single impurity greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ does not contain psilocin at a level greaterthan 2026204976   25 Jun 2026 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A’ does not contain phosphoric acid at a level greater than 1 weight%, greater than 0.5 weight%, greater than 0.4 weight%, 0.3 weight%, or greater than 0.2 weight%, as measured by 31P NMR. In some embodiments, crystalline psilocybin Polymorph A’ has a chemical assay of at least 95 weight%, at least 96 weight%, or at least 98 weight%. Illustrative XRPD diffractograms for high purity crystalline psilocybin, Polymorph A or Polymorph A’ are provided in FIGS. 2A and 2B. Illustrative DSC thermographs for high purity crystalline psilocybin, Polymorph A or Polymorph A’ are provided in FIGs. 2A and 2B. Polymorph A (including its isostructural variant Polymorph A’) (FIGS. 2A and 2B) differs from Polymorph B (FIG. 2C), the Hydrate A (FIG. 2D) and the ethanol solvate (FIG. 2E: Solvate A), and the relationship between some of the different forms is illustrated in FIG. 4. In some embodiments, the crystalline psilocybin Polymorph A or Polymorph A’ is a white to off white solid, and / or has a chemical purity of greater than 97%, 98%, or 99% by HPLC. In some embodiments, crystalline psilocybin Polymorph A or Polymorph A’ has no single impurity of greater than 1%, greater than 0.5%, greater than 0.4%, greater than 0.3%, or greater than 0.2% e g., the impurity phosphoric acid as measured by31P NMR, or the impurity psilocin measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A or Polymorph A’ has a chemical purity of greater than 97 area%, greater than 98 area%, or greater than 99 area% by HPLC. In some embodiments, crystalline psilocybin Polymorph A or Polymorph A’ has no single impurity greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A or Polymorph A’ does not contain psilocin at a level greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph A or Polymorph A’ does not contain phosphoric acid at a level greater than 1 weight%, greater than 0.5 weight%, greater than 0.4 weight%, 0.3 weight%, or greater than 0.2 weight%, as measured by 31P NMR. In some embodiments, crystalline psilocybin Polymorph A or Polymorph A’ has a chemical assay of at least 95 weight%, at least 96 weight%, or at least 98 weight%. The heating of Polymorph A or A’ results in an endothermic event having an onset temperature of circa 150°C corresponding to solid-solid transition of Polymorph A or Polymorph 2026204976   25 Jun 2026 A’ to Polymorph B. Continued heating of the resulting solid, ;.e., Polymorph B, results in a second endothermic event corresponding to a melting point having an onset temperature of between 205 and 220°C (see FIGS. 3A and 3B). Hydrate A 5           In some embodiments, the disclosure provides a crystalline form of psilocybin, Hydrate A. In some embodiments, crystalline psilocybin Hydrate A exhibits peaks in an XRPD diffractogram at 8.9, 12.6 and 13.8°20±O.1°20. In some embodiments, crystalline psilocybin Hydrate A further exhibits at least 1, 2, 3, 4, or 5 further peaks at 6.5, 12.2, 19.4, 20.4 or 2O.8°20±O.1°20. An illustrative XRPD diffractogram is provided as FIG. 2D. In some embodiments, crystalline 10 psilocybin Hydrate A further exhibits an endothermic event in a DSC thermogram having a first onset temperature of between 90°C and 100°C, a second onset temperature of between 100°C and 120°C and a third onset temperature of between 210°C and 220°C. An illustrative DSC thermogram is provided as FIG. 2D. In some embodiments, psilocybin Hydrate A exhibits an XRPD diffractogram comprising 15 at least 3, 4, 5, 6, 7, 8, 9, or 10 peaks listed in Table 3 or equivalent peaks within about ±0.1 °20. Table 3: XRPD peak positions for Hydrate A Position [°2Th.] Relative Intensity [%] 5.6 14.40 6.5 18.84 8.9 100.00 12.2 11.51 12.6 18.65 13.8 44.22 16.2 21.22 18.9 6.62 19.4 38.68 20.4 21.32 20.8 19.73 21.5 20.75 22.3 12.80 22.5 19.38 23.1 47.53 2026204976   25 Jun 2026 Position [°2Th.] Relative Intensity [%] 23.5 25.79 24.3 5.62 24.8 14.62 25.4 5.27 26.9 6.53 27.9 7.82 28.4 5.78 29.0 5.09 29.7 4.83 32.1 8.27 32.8 4.81 33.4 3.74 34.2 5.96 In some embodiments, crystalline psilocybin Hydrate A exhibits XRPD diffractogram peaks at 8.9, 12.6 and 13.8°20±O.1°20. In some embodiments, crystalline psilocybin Hydrate A exhibits at least one peak appearing at 6.5, 12.2, 19.4, 20.4 or 2O.8°20±O.1°20. In some 5 embodiments, crystalline psilocybin Hydrate A exhibits at least two peaks appearing at 6.5, 12.2, 19.4, 20.4 or 2O.8°20±O. 1 °20. In some embodiments, crystalline psilocybin Hydrate A exhibits an XRPD diffractogram substantially the same as the XRPD diffractogram shown in FIG. 2D. In certain embodiments, crystalline psilocybin Hydrate A is characterized by an endothermic event in a DSC thermogram having a first onset temperature of between 85°C and 10   105°C, such as between 90°C and 100°C and most preferably at about 96°C, a second onset temperature of between 100°C and 120°C such as between 105°C and 115°C, and most preferably at about 109°C and a third onset temperature of between 205 and 220°C, such as between 210 and 220°C, such as between 210 and 218°C, or such as between 210 and 216°C, or about 216°C. In some embodiments, crystalline psilocybin Hydrate A exhibits an endothermic 15 event in a DSC thermogram having an onset temperature of between about 205 and about 220°C, between about 210 and about 220°C, between about 210 and about 218°C, or between about 210 and about 216°C. In some embodiments, crystalline psilocybin Hydrate A exhibits an endothermic event in the DSC thermogram having an onset temperature of between about 85 and about 105°C, or between about 90 and about 100°C. In some embodiments, crystalline 2026204976   25 Jun 2026 psilocybin Hydrate A exhibits an endothermic event having an onset temperature of between about 205 and about220°C, between about 210 and about220°C, between about 210 and about 218°C, or between about 210 and about 216°C, and an endothermic event having an onset temperature of between about 85 and about 105°C or between about 90 and about 100°C, in a DSC thermogram. In some embodiments, crystalline psilocybin Hydrate A exhibits a DSC thermogram substantially the same as the DSC thermogram in FIG. 3D. In some embodiments, crystalline psilocybin Hydrate A exhibits a water content of between about 10 and about 18%, between about 12 and about 16%, or about 13%. Methods to determine the water content of a crystalline compound are known, for example Karl Fischer Titration. In some embodiments, crystalline psilocybin Hydrate A exhibits a weight loss in the TGA thermogram of between about 10 % and about 18%, between about 12 % and about 16%, or about 13%, between ambient temperature, about 25°C, and 120°C. In some embodiments, crystalline psilocybin Hydrate A is chemically pure, for example the psilocybin has a chemical purity of greater than 97%, 98%, or 99% by HPLC. In some embodiments, crystalline psilocybin Hydrate A has no single impurity of greater than 1%, greater than 0.5%, greater than 0.4%, greater than 0.3%, or greater than 0.2% e.g., the impurity phosphoric acid as measured by 31P NMR, or the impurity psilocin measured by HPLC. In some embodiments, crystalline psilocybin Hydrate A has a chemical purity of greater than 97 area%, greater than 98 area%, or greater than 99 area% by HPLC. In some embodiments, crystalline psilocybin Hydrate A has no single impurity greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Hydrate A does not contain psilocin at a level greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Hydrate A does not contain phosphoric acid at a level greater than 1 weight%, greater than 0.5 weight%, greater than 0.4 weight%, 0.3 weight%, or greater than 0.2 weight%, as measured by 31P NMR. In some embodiments, crystalline psilocybin Hydrate A has a chemical assay of at least 95 weight%, at least 96 weight%, or at least 98 weight%. In some embodiments, crystalline psilocybin Hydrate A is a highly pure crystalline form of Hydrate A. In some embodiments, the crystalline psilocybin comprises at least 90%, at least 95%, at least 99%, or at least 99.5% by weight of Hydrate A. 2026204976   25 Jun 2026 Polymorph B In some embodiments, the disclosure provides a crystalline form of psilocybin, Polymorph B. In some embodiments, crystalline psilocybin Polymorph B exhibits peaks in an XRPD diffractogram at 11.1, 11.8 and 14.3°20±O.1°20. In some embodiments, crystalline psilocybin 5 Polymorph B exhibits at least 1,2, 3, 4 or 5 peaks in an XRPD diffractogram at 14.9, 15.4, 19.3, 20.0 or2O.6°20±O.1°20. An illustrative XRPD diffractogram of crystalline psilocybin Polymorph B is provided as FIG. 2C. In some embodiments, crystalline psilocybin Polymorph B exhibits a single endothermic event in a DSC thermogram having an onset temperature of between about 205 and about 220°C. An illustrative DSC thermogram of crystalline psilocybin Polymorph B is provided 10 as FIG. 3C. In some embodiments, psilocybin Polymorph B exhibits an XRPD diffractogram comprising at least 3, 4, 5, 6, 7, 8, 9, or 10 peaks listed in Table 4 or equivalent peaks within about ±0.1 °20. 15 Table 4: XRPD peak positions for Polymorph B Position [°2Th.] Relative Intensity [%] 5.5 21.33 11.1 36.91 11.8 100.00 12.5 12.73 14.3 70.23 14.9 50.01 15.4 23.67 17.1 51.58 17.4 91.25 18.0 12.61 19.3 39.33 20.0 76.61 20.6 50.26 21.5 20.77 22.3 40.19 23.9 13.32 24.3 16.03 25.3 32.94 2026204976   25 Jun 2026 Position [°2Th.] Relative Intensity [%] 28.3 7.60 28.9 17.89 29.3 8.96 31.3 6.57 32.2 6.90 33.8 2.37 In some embodiments, crystalline psilocybin Polymorph B exhibits XRPD diffractogram peaks at 11.1, 11.8 and 14.3°20±O.1°20. In some embodiments, crystalline psilocybin Polymorph B exhibits at least one peak at 14.9, 15.4, 19.3, 20.0 or 2O.6°20±O.1°20. In some embodiments, crystalline psilocybin Polymorph B exhibits at least two peaks appearing at 14.9, 15.4, 19.3, 20.0 or 2O.6°20±O.1°20. In some embodiments, crystalline psilocybin Polymorph B exhibits an XRPD diffractogram substantially the same as the XRPD diffractogram shown in FIG. 2C. In some embodiments, crystalline psilocybin Polymorph B is characterized by a single endothermic event in a DSC thermogram having an onset temperature of between about 205 and about 220°C, between about 210 and about 220°C, between about 210 and about 218°C, or between about 210 and about 216°C. In some embodiments, crystalline psilocybin Polymorph B exhibits a DSC thermogram substantially the same as the DSC thermogram in FIG. 3C. In some embodiments, crystalline psilocybin Polymorph B exhibits a water content of <0.5% w / w, <0.4% w / w, <0.3% w / w, <0.2% w / w, or <0.1% w / w. Methods to determine the water content of a crystalline compound are known, for example Karl Fischer Titration. In some embodiments, crystalline psilocybin Polymorph B exhibits <0.5% w / w, <0.4% w / w, <0.3% w / w, <0.2% w / w, or <0.1% w / w loss in the TGA thermogram between ambient temperature, about 25°C, and 200°C. In some embodiments, crystalline psilocybin Polymorph B exhibits a loss of less than 2% by weight, less than 1% by weight, or less than 0.5% by weight in a loss on drying test. In some embodiments, the loss on drying test is performed at 70°C. In some embodiments, crystalline psilocybin Polymorph B is a highly pure crystalline form of Polymorph B, for example, psilocybin comprises at least 90%, at least 95%, at least 99%, or at least 99.5% by weight of Polymorph B. 2026204976   25 Jun 2026 In some embodiments, crystalline psilocybin Polymorph B is chemically pure, for example the psilocybin has a chemical purity of greater than 97%, 98%, or 99% by HPLC. In some embodiments, crystalline psilocybin Polymorph B has no single impurity of greater than 1%, greater than 0.5%, greater than 0.4%, greater than 0.3%, or greater than 0.2% e.g., the impurity phosphoric acid as measured by 31P NMR, or the impurity psilocin measured by HPLC. In some embodiments, crystalline psilocybin Polymorph B has a chemical purity of greater than 97 area%, greater than 98 area%, or greater than 99 area% by HPLC. In some embodiments, crystalline psilocybin Polymorph B has no single impurity greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph B does not contain psilocin ata level greater than 1 area%, greater than 0.5 area%, greater than 0.4%, greater than 0.3%, or greater than 0.2% as measured by HPLC. In some embodiments, crystalline psilocybin Polymorph B does not contain phosphoric acid at a level greater than 1 weight%, greater than 0.5 weight%, greater than 0.4 weight%, 0.3 weight%, or greater than 0.2 weight%, as measured by 31P NMR. In some embodiments, crystalline psilocybin Polymorph B has a chemical assay of at least 95 weight%, at least 96 weight%, or at least 98 weight%. In some embodiments, the psilocybin of the disclosure in the form Polymorph A or A’ has the general properties illustrated in Table 5. Table 5 Appearance: White to off-white solid Major endothermic event in DSC (onset temperature) (corresponding to a melt): 210-215°C Hygroscopicity: Psilocybin forms Hydrate A at high humidity and when added to water but the water of hydration is lost rapidly on drying. The anhydrous form is therefore being developed. Crystalline form: Anhydrous Polymorph A and / or A’ pKa (calculated): 1.74, 6.71,9.75 Solubility approx. 15 mg / ml in Water 2026204976   25 Jun 2026 In some embodiments, the psilocybin conforms to the spectra as set out in Table 6 and illustrated in the spectra of FIGS. 5-8. Table 6 Technique Conclusions Proton (1H) and Carbon (13C) NMR Assignment of the proton (FIG. 5) and carbon spectra (FIG. 6) are concordant with Psilocybin. FT-Infrared Spectroscopy (FT-IR) Assignment of the FT-IR spectrum (FIG. 7) is concordant with Psilocybin. Mass Spectroscopy (MS) Assignment of the mass spectrum (FIG. 8) is concordant with Psilocybin. Alternatively, and independently, the crystalline psilocybin may take the form of Hydrate A or Polymorph B. In some embodiments, the disclosure provides the crystalline psilocybin in the form Polymorph A or Polymorph A’ for use in medicine. In some embodiments, the disclosure provides crystalline psilocybin Polymorph A for use in medicine. In some embodiments, the disclosure provides crystalline psilocybin Polymorph A’ for use in medicine. In some embodiments, the disclosure provides a high purity crystalline psilocybin Polymorph A for use in medicine. In some embodiments, the disclosure provides a high purity crystalline psilocybin Polymorph A’ for use in medicine. Alternatively, and independently, the crystalline psilocybin may take the form of Hydrate A or Polymorph B. In some embodiments, the disclosure provides crystalline psilocybin in the form Polymorph A or Polymorph A’ for use in treating a subject in need thereof. Alternatively, and independently, the crystalline psilocybin may take the form of Hydrate A or Polymorph B. In some embodiments, the disclosure provides crystalline psilocybin, Polymorph A or Polymorph A’, for use in treating a subject in need thereof. In some embodiments, the disclosure provides crystalline psilocybin, Polymorph A or Polymorph A’, for use in treating a subject in need thereof. In some embodiments, the disclosure provides crystalline psilocybin Polymorph A for use in treating a subject in need thereof. In some embodiments, the disclosure provides crystalline psilocybin Polymorph A’ for use in treating a subject in need thereof. In some embodiments, the 2026204976   25 Jun 2026 disclosure provides a high purity crystalline psilocybin Polymorph A for use in treating a subject in need thereof. In some embodiments, the disclosure provides a high purity crystalline psilocybin Polymorph A’ for use in treating a subject in need thereof. Pharmaceutical Compositions and Formulations In some embodiments, the disclosure provides a pharmaceutical composition comprising crystalline psilocybin and one or more pharmaceutically acceptable carriers or excipients. In some embodiments, the disclosure provides a pharmaceutical formulation comprising high purity psilocybin and one or more pharmaceutically acceptable carriers or excipients. In some embodiments, the disclosure provides a pharmaceutical formulation comprising crystalline psilocybin Polymorph A and one or more pharmaceutically acceptable carriers or excipients. In some embodiments, the disclosure provides a pharmaceutical formulation comprising crystalline psilocybin Polymorph A’ and one or more pharmaceutically carriers or excipients. In some embodiments, the disclosure provides a pharmaceutical formulation comprising high purity crystalline psilocybin, Polymorph A or Polymorph A’, and one or more pharmaceutically acceptable carriers or excipients. In some embodiments, the disclosure provides a pharmaceutical formulation comprising high purity crystalline psilocybin Polymorph A and one or more pharmaceutically acceptable carriers or excipients. In some embodiments, the disclosure provides a pharmaceutical formulation comprising high purity crystalline psilocybin Polymorph A’ and one or more pharmaceutically acceptable carriers or excipients. Preferred pharmaceutical excipients for an oral formulation include: diluents, such as microcrystalline cellulose, starch, mannitol, calcium hydrogen phosphate anhydrous or comixtures of silicon dioxide, calcium carbonate, microcrystalline cellulose and talc; disintegrants, such as sodium starch glycolate or croscarmellose sodium; binders, such as povidone, copovidone or hydroxyl propyl cellulose; lubricants, such as magnesium stearate or sodium stearyl fumurate; glidants, such as colloidal silicon dioxide; and film coats, such as Opadry II white or PVA based brown Opadry II. In some embodiments, the oral dosage form also comprises a disintegrant, such as, but not limited to: starch glycolate, croscarmellose sodium, and / or mixtures thereof. In some embodiments, the oral dosage form comprises 3% or less by wt disintegrant, less than 3% by wt disintegrant and greater than 0.001% by wt disintegrant, about 2.5% by wt or less disintegrant; 2026204976   25 Jun 2026 2% by wt or less disintegrant; 1.5% by wt or less disintegrant; 1% by wt or less disintegrant; 0.7% by wt or less disintegrant; 0.5% by wt or less disintegrant, or 0.3% by wt or less disintegrant. In some embodiments, the disintegrant is sodium starch glycolate. In some embodiments, the sodium starch glycolate is present at less than 3% wt. In Other embodiments, the sodium starch glycolate is present at about 2% by wt or less, about 2% by wt; about 1% by wt or less, about 1% by wt; about 0.7% by wt or less, about 0.7% by wt; about 0.5% by wt or less, or about 0.5% by wt.. In still other embodiments, the sodium starch glycolate is present at about 0.5% to 1 % by wt. In some embodiments, the oral dosage form comprises 5 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 1%. In some embodiments, the oral dosage form comprises 5 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5% to 1.0%. In some embodiments, the oral dosage form comprises 5 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5%. In some embodiments, the oral dosage form comprises 10 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 1%. In some embodiments, the oral dosage form comprises 10 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5% to 1.0%. In some embodiments, the oral dosage form comprises 10 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5%. In some embodiments, the oral dosage form comprises 25 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 1%. In some embodiments, the oral dosage form comprises 25 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5% to 1.0%. In some embodiments, the oral dosage form comprises 25 mg 2026204976   25 Jun 2026 of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5%. In some embodiments there is provided the crystalline psilocybin in the form Polymorph A or Polymorph A’ for use in medicine. In some embodiments, there is provided crystalline psilocybin Polymorph A for use in medicine. In some embodiments, there is provided crystalline psilocybin Polymorph A’ for use in medicine. In some embodiments, there is provided a high purity crystalline psilocybin Polymorph A for use in medicine. In some embodiments, there is provided a high purity crystalline psilocybin Polymorph A’ for use in medicine. Alternatively, and independently, the crystalline psilocybin may take the form of Hydrate A or Polymorph B. In some embodiments, there is provided crystalline psilocybin, particularly but not essentially in the form Polymorph A or Polymorph A’ for use in treating central nervous disorders. Alternatively, and independently, the crystalline psilocybin may take the form of Hydrate A or Polymorph B. In some embodiments, the pharmaceutical formulation is a parenteral dosage form. In some embodiments, the pharmaceutical formulation is an oral dosage form. In some embodiments, the pharmaceutical composition comprises a tablet. In some embodiments, the pharmaceutical composition comprises a capsule. In some embodiments, the pharmaceutical composition comprises a dry powder. In some embodiments, the pharmaceutical composition comprises a solution. In some embodiments, more than one dosage form is administered to the subject at substantially the same time. In some embodiments, the subject may be administered the entire therapeutic dose in one tablet or capsule. In some embodiments, the therapeutic dose may be split among multiple tablets or capsules. For example, for a dose of 25 mg, the subject may be administered 5 tablets or capsules each comprising 25 mg of psilocybin. Alternatively, fora dose of 10 mg, the subject may be administered 2 tablets or capsules each comprising 5 mg of psilocybin. In some embodiments, the oral dosage form comprises a functional filler. The functional filler may be a silicified filler, such as, but not limited to silicified microcrystalline cellulose (SMCC). In some embodiments, the oral dosage form comprises high compactability grades of SMCC with a particle size range of from about 45 to 150 microns. A mixture of two functional fillers having 2026204976   25 Jun 2026 different particle size ranges may be used with the weight percentages of the two favoring the larger sized particles. In some embodiments, the silicified microcrystalline filler may comprise a first filler, having a particle size range of from about 45 to 80 microns in an amount of up to 30%, up to 20%, up to 15%, or less by weight of filler, and a second filler, having a particle size range of from about 90 to 150 microns, in an amount of up to 70%, up to 80%, up to 85%, or more, by weight of filler. In some embodiments, the oral dosage form may comprise silicified microcrystalline cellulose with a particle size range of from about 45 to 80 microns (SMCC 50), such as Prosolv 50; silicified microcrystalline cellulose with a particle size range of from about 90 to 150 microns (SMCC 90), such as Prosolv 90; or mixtures thereof. In other embodiments, the oral dosage form may comprise SMCC 50 and SMCC 90. In other embodiments, the oral dosage form may comprise SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:5 to 1:8 wt%. In still other embodiments the ratio of SMCC 50 to SMCC 90 is 1:5-1:7; 1:6-1:7; 1:6-1:8; or 1.71.8. In still other embodiments the ratio of SMCC 50 to SMCC 90 is 1:6; 1:6.1; 1:6.2; 1:6.3; 1:6.4; 1:6.5; 1:6.6; 1.6.7; 1:6.8; 1.6.9; or 1:7. The formulation may further comprise or consist essentially of a disintegrant, including without limitation sodium starch glycolate; a glidant, including without limitation colloidal silicon dioxide; and a lubricant, including without limitation sodium stearyl fumarate. In some embodiments, the oral dosage form may comprise a disintegrant such as sodium starch glycolate, at less than 3% (by wt), less than 2%, or 1% or less. In some embodiments, the oral dosage form comprises 5 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 1%. In some embodiments, the oral dosage form comprises 5 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5% to 1.0%. In some embodiments, the oral dosage form comprises 5 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5%. In some embodiments, the oral dosage form comprises 10 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 1%. In some embodiments, the oral dosage form comprises 10 mg of psilocybin and 2026204976   25 Jun 2026 SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5% to 1.0%. In some embodiments, the oral dosage form comprises 10 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5%. In some embodiments, the oral dosage form comprises 25 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 1%. In some embodiments, the oral dosage form comprises 25 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5% to 1.0%. In some embodiments, the oral dosage form comprises 25 mg of psilocybin and SMCC 50 and SMCC 90, wherein the ratio of SMCC 50 to SMCC 90 is 1:6.4 and sodium starch glycolate at about 0.5%. In some embodiments, the oral dosage form comprises 5 mg of crystalline psilocybin in the form of Polymorph A, 12.5 mg of SMCC 50, 79.5 mg of SMCC 90, 1 mg sodium starch glycolate, 1 mg colloidal silicon dioxide and 1 mg sodium stearyl fumarate. In some embodiments, the tablet or capsule comprises 5 mg of crystalline psilocybin in the form of Polymorph A, 12.5 mg of SMCC 50, 79.5 mg of SMCC 90,1 mg sodium starch glycolate, 1 mg colloidal silicon dioxide and 1 mg sodium stearyl fumarate. In some embodiments, the oral dosage form comprises 1 mg of crystalline psilocybin in the form of Polymorph A, 20.5 mg of SMCC 50, 75.5 mg of SMCC 90, 1 mg sodium starch glycolate, 1 mg colloidal silicon dioxide, and 1 mg sodium stearyl fumarate. In some embodiments, the tablet or capsule comprises 1 mg of crystalline psilocybin in the form of Polymorph A, 20.5 mg of SMCC 50, 75.5 mg of SMCC 90, 1 mg sodium starch glycolate, 1 mg colloidal silicon dioxide, and 1 mg sodium stearyl fumarate. In some embodiments, the tablet or capsule comprises one or more excipients. Nonlimiting exemplary excipients include microcrystalline cellulose and starch, including without limitation silicified microcrystalline cellulose. It should be noted that the formulations may comprise psilocybin in any form, not only the polymorphic forms disclosed herein. As used herein, oral doses of psilocybin are classified follows: “very low doses” (about 0.045 mg / kg or less); “low doses” (between about 0.115 and about 0.125 mg / kg), “medium doses” 2026204976   25 Jun 2026 (between about 0.115 to about 0.260 mg / kg), and “high doses” (about 0.315 mg / kg or more). See Studerus et al (2011) J Psychopharmacol 25(11) 1434-1452. In some embodiments, the formulated dose of psilocybin comprises from about 0.01 mg / kg to about 1 mg / kg. In some embodiments, a human dose (for an adult weighing 60-80kg) comprises between about 0.60 mg and about 80 mg. In some embodiments, a formulated dose comprises between about 2 and about 50 mg of crystalline psilocybin. In some embodiments, a formulated dose comprises between 2 mg and 40 mg, between 2 mg and 10 mg, between 5 mg and 30 mg, between 5 mg and 15 mg, or between 20 mg and 30 mg of crystalline psilocybin. In some embodiments, a formulated dose comprises about 1 mg, about 5 mg, about 10 mg, or about 25 mg of crystalline psilocybin. In some embodiments, a formulated dose comprises between about 2 and about 50 mg of crystalline psilocybin Polymorph A or Polymorph A’ or a mixture thereof. In some embodiments, a formulated dose comprises between 2 mg and 40 mg, between 2 mg and 10 mg, between 5 mg and 30 mg, between 5 mg and 15 mg, or between 20 mg and 30 mg of crystalline psilocybin Polymorph A or Polymorph A’ or a mixture thereof. In some embodiments, a formulated dose comprises about 1 mg, about 5 mg, about 10 mg, or about 25 mg of crystalline psilocybin Polymorph A or Polymorph A’ or a mixture thereof. In some embodiments, a formulated dose comprises about 5 mg of crystalline psilocybin Polymorph A or Polymorph A’ or a mixture thereof. In some embodiments, a formulated dose comprises between about 2 and about 50 mg of crystalline psilocybin Polymorph A. In some embodiments, a formulated dose comprises between 2 mg and 40 mg, between 2 mg and 10 mg, between 5 mg and 30 mg, between 5 mg and 15 mg, or between 20 and 30 mg of crystalline psilocybin Polymorph A. In some embodiments, a formulated dose comprises about 1 mg, about 5 mg, about 10 mg, or about 25 mg of crystalline psilocybin Polymorph A. In some embodiments, a formulated dose comprises between about 2 mg and about 50 mg of crystalline psilocybin Polymorph A’. In some embodiments, a formulated dose comprises between 2 mg and 40 mg, between 2 mg and 10 mg, between 5 mg and 30 mg, between 5 mg and 15 mg, or between 20 mg and 30 mg of crystalline psilocybin Polymorph A’. In some 2026204976   25 Jun 2026 embodiments, a formulated dose comprises about 1 mg, about 5 mg, about 10 mg, or about 25 mg of crystalline psilocybin Polymorph A’. In some embodiments, a formulated dose comprises between about 2 mg and about 50 mg of crystalline psilocybin Polymorph B. In some embodiments, a formulated dose comprises between 2 mg and 40 mg, between 2 mg and 10 mg, between 5 mg and 30 mg, between 5 mg and 15 mg, or between 20 mg and 30 mg of crystalline psilocybin Polymorph B. In some embodiments, a formulated dose comprises about 1 mg, about 5 mg, about 10 mg, or about 25 mg of crystalline psilocybin Polymorph B. In some embodiments, a formulated dose comprises between about 2 and about 50 mg of crystalline psilocybin Hydrate A. In some embodiments, a formulated dose comprises between 2 mg and 40 mg, between 2 mg and 10 mg, between 5 mg and 30 mg, between 5 mg and 15 mg, or between 20 mg and 30 mg of crystalline psilocybin Hydrate A. In some embodiments, a formulated dose comprises about 1 mg, about 5 mg, about 10 mg, or about 25 mg of crystalline psilocybin Hydrate A. Dosing In some embodiments, a therapeutically effective dose of psilocybin is administered to the subject. In some embodiments, each dose of psilocybin administered to the subject is a therapeutically effective dose. In some embodiments, a dose of psilocybin may be in the range of about 1 mg to about 100 mg. For example, the dose may be about 1 mg, about 5 mg, about 10 mg, about 15 mg, about 20 mg, about 25 mg, about 30 mg, about 35 mg, about 40 mg, about 45 mg, about 50 mg, about 55 mg, about 60 mg, about 65 mg, about 70 mg, about 75 mg, about 80 mg, about 85 mg, about 90 mg, about 95 mg, or about 100 mg. In some embodiments, the dose of psilocybin is between about 0.1 mg to about 100 mg, about 1 mg to about 50 mg, or about 5 mg to about 30 mg. In some embodiments, the dose of psilocybin is about 1 mg, about 10 mg, or about 25 mg. In some embodiments, the dose of psilocybin is in the range of about 0.001 mg to about 1 mg. In some embodiments, the dose of psilocybin is in the rage of about 100 mg to about 250 mg. In some embodiments, the dose of psilocybin is about 25 mg. In some embodiments, the psilocybin is in the form of polymorph A. 2026204976   25 Jun 2026 In some embodiments, an adult oral dose comprises about 1 mg to about 40 mg, about 2 to about 30 mg, or about 15 to about 30 mg of crystalline psilocybin, for example about 1 mg, about 5 mg, about 10 mg, or about 25 mg of crystalline psilocybin. In some embodiments, an adult oral dose comprises about 25 mg of crystalline psilocybin. In some embodiments, the crystalline psilocybin is in the form of polymorph A. In some embodiments, a “micro-dose” of psilocybin is administered to a subject. A microdose may comprise, for example, about 0.05 mg to about 2.5 mg of crystalline psilocybin, such as about 1.0 mg. In the case of micro-dosing the regime may comprise a regular, continuous regime of, for example, daily administration, every other day administration, or weekly, administration. Such dosing may be absent of psychological support. In some embodiments, one dose of psilocybin is administered to the subject. In some embodiments, multiple doses of psilocybin are administered to the subject. For example, at least 2, at least 3, at least 4, at least 5, at least 6, at least 7, at least 8, at least 9, at least 10, at least 15, at least 20, at least 25, at least 30, or at least 50 doses of psilocybin may be administered to the subject. In some embodiments, the same dose of psilocybin is administered to a subject during each administration. In some embodiments, a different dose of psilocybin is administered to a subject during each administration. In some embodiments, the dose of psilocybin administered to the subject is increased overtime. In some embodiments, the dose of psilocybin administered to the subject is decreased overtime. In some embodiments, the psilocybin is administered at therapeutically effective intervals. In some embodiments, a therapeutically effective interval may be about 2 weeks, about 3 weeks, about 4 weeks, about 5 weeks, about 6 weeks, about 7 weeks, about 8 weeks, about 9 weeks, about 10 weeks, about 11 weeks, or about 12 weeks. In some embodiments, a therapeutically effective interval maybe about 1 month, about 3 months, about 6 months, or about 12 months. In some embodiments, the psilocybin is administered once per day. In some embodiments, the psilocybin is administered at least once per week or at least twice per week. In some embodiments, the psilocybin is administered at least once per month or at least twice per month. In some embodiments, the psilocybin is administered at least once every three months, at least once every six months, or at least once every 12 months. In some embodiments, a first dose and a second dose of psilocybin are administered to the subject. In some embodiments, the first dose is about 1 mg and the second dose is about 1 2026204976   25 Jun 2026 mg. In some embodiments, the first dose is about 10 mg and the second dose is about 10 mg. In some embodiments, the first dose is about 25 mg and the second dose is about 25 mg. In some embodiments, the first dose is about 10 mg and the second dose is about 25 mg. In some embodiments, the first dose is about 25 mg and the second dose is about 10 mg. In some embodiments, the first dose is about 1 mg and the second dose is about 10 mg. In some embodiments, the first dose is about 1 mg and the second dose is about 25 mg. In some embodiments, the first dose is about 10 mg and the second dose is about 1 mg. In some embodiments, the first dose is about 25 mg and the second dose is about 1 mg. In some embodiments a second dose of psilocybin is administered from about one week to about 12 weeks after a first dose. In some embodiments, a second dose of psilocybin is administered about one week after a first dose. In some embodiments, a second dose of psilocybin is administered about two weeks after a first dose. In some embodiments, a second dose of psilocybin is administered about three weeks after a first dose. In some embodiments, a second dose of psilocybin is administered about four weeks after a first dose. In some embodiments, a second dose of psilocybin is administered about five weeks after a first dose. In some embodiments, a second dose of psilocybin is administered about six weeks after a first dose. Administration Routes Exemplary modes for administration of psilocybin include oral, parenteral (e.g., intravenous, subcutaneous, intradermal, intramuscular [including administration to skeletal, diaphragm and / or cardiac muscle], intradermal, intrapleural, intracerebral, and intra-articular), topical (e.g., to both skin and mucosal surfaces, including airway surfaces, and transdermal administration), inhalation (e.g., via an aerosol), rectal (e.g., via a suppository), transmucosal, intranasal, buccal (e.g., sublingual), vaginal, intrathecal, intraocular, transdermal, in utero (or in ovo), intralymphatic, and direct tissue or organ injection (e.g., to liver, skeletal muscle, cardiac muscle, diaphragm muscle or brain). In some embodiments, psilocybin is administered orally to the subject. Methods of Treatment It is to be understood by one of skill in the art that the methods of treatment comprising administering psilocybin, a prodrug of psilocybin, a metabolite of psilocybin, and / or a prodrug of a metabolite of psilocybin for the treatment of one or more indications as described herein also 2026204976   25 Jun 2026 include: the use of psilocybin, a prodrug of psilocybin, a metabolite of psilocybin, and / or a prodrug of a metabolite of psilocybin in the manufacture of a medicament for the treatment of one or more indications as described herein; and the use of psilocybin, a prodrug of psilocybin, a metabolite of psilocybin, and / or a prodrug of a metabolite of psilocybin for the treatment of one or more indications as described herein. In some embodiments, a method for treating a subject in need thereof comprises administering to the subject a therapeutically effective dose of psilocybin. In some embodiments, a method for treating a subject in need thereof comprises administering to the subject a therapeutically effective dose of psilocybin in a controlled environment, wherein the subject is provided with psychological support. In some embodiments, a method for treating a subject in need thereof comprises at least one of the following: (i) administering to the subject a therapeutically effective dose of psilocybin in a controlled environment, wherein the subject is provided with psychological support; (ii) having the subject participate in one or more pre-administration psychological support session(s); and / or (ii) having the subject participate in one or more post-administration psychological support session(s). After administration of the psilocybin, the subject may not feel the effects of the drug for about 30 minutes to about 90 minutes. In some embodiments, the subject may not feel the effects of the drug for about 60 minutes. This period after administration and before the onset of effects will be referred to herein as the initial stage of the psilocybin session. The time marked by the onset of the drug’s effects will be referred to herein as the early stage of the psilocybin session. In some embodiments, the subject will experience the peak of the psilocybin’s effects at about 1.5 hours to about 3.5 hours after administration thereof. The time period marked by the peak psilocybin experience will be referred to herein as the peak stage of the psilocybin session. In some embodiments, the effects of the psilocybin may substantially wear off from about 4 hours to about 6 hours after administration. This time period will be referred to as the late stage of the psilocybin session. 2026204976   25 Jun 2026 In some embodiments, the subject’s ability to reach a non-dual state (e.g., a mystical experience), or a sense of unity, boundlessness, ego-dissolution or transcendence correlates with positive clinical outcome. Each of these terms may be commonly defined as the breakdown of the usual relationship between self and other, whereby the subject might feel a oneness and increased sense of connectedness to the surrounding environment and / or the world at large. In some embodiments, low levels of emotional arousal - which could indicate avoidance, lack of involvement or intellectualization - might, in some embodiments, be correlated with little or no improvement in treatment outcomes. Factors that may influence the subjective experience of psilocybin include, for example, (i) dose, (ii) the mindset of the participant prior to the session, (iii) the setting of the session, (iv) the subject’s ability to focus and stay with the experience, and / or (v) the subject’s prior experience with psychedelics. These, and other factors, will be described in more detail below, along with ways to maximize therapeutic benefit of the psilocybin session. Pre-Administration Psychological Support Sessions In some embodiments, the subject participates in at least one psychological support session before administration of the psilocybin (“pre-administration psychological support session”). In some embodiments, a pre-administration psychological support session may be held about 1 month prior to the psilocybin administration. In some embodiments, a pre-administration psychological support session may be held about 2 weeks prior to the psilocybin administration. In some embodiments, a pre-administration psychological support session may be held about 1 week prior to the psilocybin administration. In some embodiments, a pre-administration psychological support session may be held about 3 days prior to the psilocybin administration. In some embodiments, a pre-administration psychological support session may be held about 1 day prior to the psilocybin administration. In some embodiments, a pre-administration psychological support session may be held on the same day as and prior to psilocybin administration. In some embodiments, the subject may participate in one, two, three, four, five, six, seven, or eight pre-administration psychological support sessions. In some embodiments, the subject may participate in at least two pre-administration psychological support sessions. In some embodiments, the subject may participate in at least three pre-administration psychological support sessions. In some embodiments, the subject may participate in pre-administration psychological support sessions at least once per week, for at least two or three weeks prior to the 2026204976   25 Jun 2026 psilocybin session. In some embodiments, the subject may additionally participate in a preadministration psychological support session the day before the psilocybin session. The pre-administration psychological support sessions may be individual sessions, wherein a subject meets one-on-one with a therapist. In some embodiments, the psychological support sessions may be group sessions, wherein more than one subject meets with a single therapist, or more than one therapist. In some embodiments, one or more of the subject’s family members or friends may be present at the pre-administration psychological support session(s). In some embodiments, the goals of the pre-administration session may include (i) establishing therapeutic alliance between subject and therapist; (ii) answering the subject’s questions and addressing any concerns; and / or (iii) demonstrating and practicing the skills of selfdirected inquiry and experiential processing. In some embodiments, the pre-administration psychological support sessions focus on discussion of possible psilocybin effects, and / or preparing subjects for the dosing session by practicing relevant therapeutic techniques to reduce avoidance and anxiety, eliciting relevant therapeutic goals, building rapport, and / or establishing therapeutic alliance. During the psychological support session, skills of self-directed inquiry and experiential processing may be demonstrated and / or practiced. In some embodiments, breathing exercises meant to promote calm and / or ease anxiety may be demonstrated and / or practiced. In some embodiments, the breathing exercise comprise instructing the subject to focus on their breath and / or sensations associated with the breath throughout the body. For example the subject may be instructed to breathe in for a count of four, to hold their breath for a moment, and then to breathe out for a count of eight. In some embodiments, the therapist and subject may discuss the most helpful ways to support in case of emotional distress during the psilocybin session. In some embodiments, the subject is given access (e.g., online access) to materials concerning the safety and mechanism of action of psilocybin. In some embodiments, the pre-administration psychological support sessions will serve to establish a therapeutic goal for the psilocybin session. In some embodiments, the subject suggests the therapeutic goal for herself or himself. In some embodiments, the therapist suggests the therapeutic goal to the subject. In some embodiments, the subject is reminded of the therapeutic goal during the pre-administration psychological support session. 2026204976   25 Jun 2026 In some embodiments, the therapists are trained to counsel the subject before, during, and / or after the psilocybin sessions. In some embodiments, the therapist will have mental health training. In some embodiments, the therapist will be a clinical psychologist, a psychiatrist, a social worker, a doctor or a nurse. In some embodiments, the therapist will meet the following criteria: • Demonstrate independent clinical experience with direct subject care in areas that require counselling and psychotherapeutic skills; • Current unrestricted professional license and / or good professional standing with no history of suspension, professional misconduct or disciplinary actions; and / or • High level of openness to learning new approaches and receiving feedback. Psychological Support During Psilocybin Sessions During the treatment session, the subject may be supervised by one or more trained therapists. The therapist supervising the subject during the psilocybin session may be the same therapist from the subject’s pre-administration psychological support session(s), or may be a different therapist. The therapist(s) may provide psychological support to the subject as necessary. As used herein, the term “psychological support” refers to any measure(s) taken by the therapist during the subject’s psilocybin session to ensure the safety of the subject and maximize the clinical effectiveness of the psilocybin session. For example, the psychological support may be anything done by the therapist to (1) to ensure psychological safety of the subject; (2) to allow the subject’s subjective experience to unfold naturally within the boundaries of the therapeutic intention set at the preparation; (3) to maintain participant’s attention and awareness on the experience of the present moment thus allowing exposure and processing of the challenging emotional states and personal memories; and / or (4) to generate insights and solutions forthe resolution of challenging personal situations, conflicts and traumatic experiences. In some embodiments, support can be in the form of therapeutic touch, verbal reassurance, guided imagery and / or relaxation or breathing exercises. In some embodiments, the support may comprise reminders, encouragement, or active guiding. Typically, only one technique is applied at a time to allow for minimal intervention and interference with the subject’s unique process. In some embodiments, the main therapeutic goals of the therapist during the psilocybin session are to (i) minimize extreme anxiety, and (ii) provide appropriate support that enables the skills and processes of self-directed inquiry and experiential processing. In some embodiments, 2026204976   25 Jun 2026 the therapist demonstrates genuine presence, patience, curiosity, and / or openness during the psilocybin session. “Presence” refers to being totally available and present with the subject during all stages of the psilocybin session, and exuding calmness at all times. “Curiosity” refers to interest and willingness to understand the subject’s experience, without making assumptions. “Patience” means that the therapist facilitates the participant taking as much time as needed to explore their experiences without controlling the natural urge to help or direct the experience. “Openness” is the ability of the therapist to remain cognitively and experientially open, including a capacity to be curious about how the subject’s mind may uniquely choreograph the unfolding content of a session. This includes welcoming all emotions and expressions that might occur. In some embodiments, the psychological support may comprise curious questioning. In this technique, brief, but detailed, questioning of subjects is used to help the subjects shift and sustain their attention towards different levels of cognition and emotions (“How does that make you feel?”) Due to the applicability across a range of mental states and within various settings, the technique of curious questioning can typically be used safely and consistently during the psilocybin session, regardless of the quality or intensity of the experience of each subject. In some embodiments, the level of psychological support will vary during the various stages of the subject’s psilocybin experience (e.g., the initial stage, the early stage, the peak stage, and the late stage). In some embodiments, the type of psychological support will vary during the various stages of the subject’s psilocybin experience (e.g., the initial stage, the early stage, the peak stage, and the late stage). Because non-dual, ego-dissolution or “unitive” experiences have been shown to positively correlate with the magnitude and durability of the clinical response, the therapist will, in some embodiments, attend to such states with particular care. In some embodiments, a subject may experience of a compromised sense of self during the subject’s psilocybin experience. In some embodiments, this is interpreted from a psychoanalytic perspective as a disruption of ego-boundaries, which results in a blurring of the distinction between self-representation and object-representation, and precludes the synthesis of self-representations into a coherent whole. In some embodiments, non-dual, ego-dissolution or “unitive” experiences refer to an altered state of consciousness in which there is a reduction in the self-referential awareness that defines normal waking consciousness, resulting in a compromised sense of “self’ and instead only a undivided background awareness, often characterised by a sense of unity or “oneness” that exceeds sensory or cognitive apprehension. 2026204976   25 Jun 2026 In some embodiments, a non-dual experience is state of consciousness in which the subjectobject dichotomy in normal waking consciousness is substituted for a unified background awareness that is centreless and undivided. In some embodiments, an ego dissolution experience is a spontaneously occurring state of consciousness where there is a reduction in the self-referential awareness that defines normal waking consciousness, resulting in a compromised sense of “self’. In some embodiments, a unitive experience is an experience characterised by a sense of unity or “oneness” that exceeds sensory or cognitive apprehension. At the initial and early stage of the psilocybin session, psychological support may be used to reduce severe and / or prolonged anxiety. Anxiety prior to or during the onset of psilocybin effects is not uncommon, and the therapists may be specially trained to recognize and actively manage subjects through such periods of anxiety until the subject is comfortable enough to continue on their own. In some embodiments, therapists validate the subject’s feelings of anxiety without providing interpretations of perceptual disturbances or guiding subjects towards a particular image or memory, other than encouraging them to stay relaxed and open to the emergent experiences. For example, in some embodiments, the therapist may help alleviate anxiety using a grounding exercise. In such an exercise, the subject may be encouraged to pay attention to the sounds around them or to sensations on their skin when touching the bed / couch, ground, or other objects. At the initial and early stage of the psilocybin session, the therapist may encourage the subject to lie down, practice relaxation and breathing exercises, and / or listen to calming music. In some embodiments, the therapist may remind the subject of the intention for the treatment session. For example, the therapist may ask the subject “What does feeling better or recovery feel like?” or any number of similar questions. Such reminders prior to the onset of or at the onset of psilocybin effects provide an implicit direction for the subjective experience during the psilocybin session. In some embodiments, the therapist may remind the subject that their primary task during this session is to simply collect new and interesting experiences which can then be discussed with the therapist after the session. The therapist may remind the participant of the purpose of the psilocybin therapy and the role of experiential processing, namely allowing the participant to be open and curious to whatever arises and encountering thoughts and feelings previously unknown to them. In some embodiments, the therapist emphasizes that this process inherently requires letting go and a willing passivity to the psychedelic experience. During the acute onset of action, the subject might experience perceptual changes in visual, auditory or olfactory modes, and a range of unusual physical sensations. These 2026204976   25 Jun 2026 experiences could be anxiety-provoking. In some embodiments, the therapist may practice reassuring “arm holding”. This is where, upon the subject’s request, a therapist will place his or her hand on the subject’s wrist, arm, hand, or shoulder, as a way of helping the subject feel secure during this phase. This exercise may have been previously practiced during the pre-administration psychological support session. In some embodiments, the therapist may encourage the subject to put on an eye mask, such as a Mindfold eyeshade. In some embodiments, the therapist encourages the subject to put on the eye mask before, during, or after the onset of the psilocybin’s effects. In some embodiments, the therapist may encourage the subject to put on headphones and listen to music. In some embodiments, the headphones reduce outside noise (e.g., “noisecancelling” headphones). In some embodiments, the music is calming music such as instrumental (e.g., classical) music. In some embodiments, the music comprises nature sounds and / or the sound of moving water (e.g., ocean sounds). In some embodiments, the music comprises isochronic tones. In some embodiments, the music comprises moments of silence. In some embodiments, the music is emotionally evocative. In some embodiments, the music comprises a playlist which mirrors the pharmacodynamics of a typical high-dose psilocybin session: the initial stage, the early stage, the peak stage, and the late stage. In some embodiments, listening to music helps the subject to focus on their internal experience. In case of prolonged anxiety or distress, therapists may, in some embodiments, actively guide participants through such experiences without interpreting or judging the experiences or giving advice. Once participants are comfortable, the therapist may encourage them to again engage in introspection. During the peak and late stages of the psilocybin session, the therapist may encourage subjects to face and explore their experience, including the challenging ones. Therapists may direct subjects to participate self-directed inquiry and experiential processing to develop a different perspective on their personal challenges and conflicts, and to generate their own solutions. Such self-generated insights are not only therapeutic because of the emotional resolution, but also empowering to subjects. As used herein, the term “self-directed inquiry” refers to directing attention to internal states. Subjects are encouraged to be curious about experiences in the present moment, 2026204976   25 Jun 2026 including foreground and background thoughts, emotions, and physical sensations. During the preparation and integration stages, this inquiry might mean asking specific and detailed questions to help direct attention to internal states. However, during the period of drug action, inquiry might simply mean an attitude of openness to inner experiences. As used herein, “experiential processing” refers to a participant’s ability to maintain full attention on the experiences that come into awareness through self-directed enquiry. This includes a willingness and ability to be with and / or move ‘in and through’ even uncomfortable or challenging thoughts, feelings, sensations or emotions, until discomfort is diminished or resolved. In some embodiments, the therapist will employ a transdiagnostic therapy. In some embodiments, the transdiagnostic therapy is a Method of Levels (MOL) therapy. In still further embodiments, the MOL therapy comprises Self-Directed Enquiry and Experiential Processing. Typically, MOL uses brief, but detailed, curious questioning to help subjects shift and sustain their attention towards different levels of cognition and emotions (Carey, 2006; Carey, Mansell & Tai, 2015). The emphasis within MOL is on identifying and working with a subject’s underlying distress as opposed to just their symptoms. Such MOL related methods and techniques can include: (1) Self-directed enquiry - directing attention to internal states. Participants are encouraged to be curious about experiences in the present moment, including foreground and background thoughts, emotions, and physical sensations; during the preparation and integration stages, such enquiry can mean asking specific and detailed questions to help direct attention to internal states, although for some embodiments, during the period of drug action, enquiry can refer to an attitude of openness to inner experiences; and (2) Experiential processing - sustained focus on the experience; refers to a participant’s ability to maintain full attention on the experiences that come into awareness through self-directed enquiry. This includes a willingness and ability to be with and / or move ‘in and through’ even uncomfortable or challenging thoughts, feelings, sensations or emotions, until discomfort is diminished or resolved. In some embodiments, the psychological support comprises mindfulness-based therapy or CBT cognitive behavioral therapy (CBT). In some embodiments, the psychological support is informed by a functional theory of human behavior called Perceptual Control Theory. Occasionally, the subject will try to avoid emerging experiences or distract him / herself while trying to regain cognitive control over the unusual state of their mind. Such distractions may take different forms. For example, the subject might want to engage in a conversation or 2026204976   25 Jun 2026 prematurely describe in detail their experience, visions or insights. When this occurs, the therapist may aim to remain as silent as possible, thereby enabling the subject and his / her inner experience to direct the course of the psilocybin session. In some embodiments, the therapist may use active listening skills paired with prompts to encourage the subject to continue focusing attention on present experiences, particularly if the participant engages the therapist in conversation. In another example, a subject might ask to go to the bathroom or have a drink of water. The sudden and urgent character of such requests might suggest that they are really trying to avoid emerging material. In such cases, the therapist may encourage the subject to stay with the experience by simply redirecting their attention. For example, the therapist may say something like, ‘We will take a bathroom break at the end of this piece of music” or “I will get you water in a little while. Why don’t you put the eye shades back on and relax for a few minutes?” If the subject is trying to avoid a difficult experience, they might listen to the suggestion and relax. In some embodiments, spontaneous movement such as shaking, stretching or dancing while engaging with the experience is accepted and often encouraged, unless the movement seems to be a way to distract oneself from the experience. In some embodiments, if the subject continues to move around a lot, reminders to periodically return to a lying down position and to actively focus inwards may be provided. The therapist is not required to understand, support or even have an opinion about the nature or content of the subject’s experiences, but the therapist may validate them and convey openness toward the subject’s own view of them without dismissing or pathologizing any experience based on its unusual content. These experiences may provide the subject with a perspective that goes beyond identification with their personal narrative. In some embodiments, the therapist will validate one or more of the subject’s experiences. In some embodiments, validation of the experiences simply means acknowledging the courage of opening up to the experience and the possibility that any experience will serve the intention of the session. In some embodiments, a therapist provides psychological support for approximately 4-8 hours immediately after administration of the psilocybin. In some embodiments, the therapist uses guided imagery and / or breathing exercises to calm the subject and / or focus the subject’s attention. In some embodiments, the therapist holds the hand, arm, or shoulder of the subject. In some embodiments, the therapist counsels the subject to do one or more of the following: (1) to accept feelings of anxiety, (2) to allow the experience to unfold naturally, (3) to avoid 2026204976   25 Jun 2026 psychologically resisting the experience, (4) to relax, and / or (5) to explore the subject’s own mental space. In some embodiments, the therapist avoids initiating conversation with the subject, but responds if the subject initiates conversation. Typically, active intervention is kept to a minimum during the treatment experience. In some embodiments, the subject is encouraged to explore their own mental space, and simple guided imagery may be used to assist relaxation. “Guided imagery” refers to an exercise wherein the subject is asked to imagine a scene (e.g., “Invite a scene, perhaps a landscape, and tell me where you find yourself’; “Imagine a place that feels safe to you.”) Post-Administration Psychological Support Session In some embodiments, subjects may be encouraged to engage in post-administration integration sessions with their therapist. Integration is a process that involves processing, or embodying, a psychedelic experience within a therapeutic context. The process initially begins by the subject verbalising and reflecting upon any experience from the psilocybin session, and discussing it openly with their therapist. Successful integration of a psilocybin experience accommodates for emotional changes and comprises of translating experiences into new insights, perspectives, and subsequently new behaviors that can be used to benefit the subject’s quality of life. New perspectives might in turn influence the participant’s current knowledge or values and lead to new ways of relating to cognitions, emotions, behaviors and physical experiences. In some embodiments, the goals and supportive methods used by the therapist throughout integration sessions should remain consistent, regardless of the intensity or content of the subjective experience explored by the subject. That said, the methods of support used by the therapist should accommodate for the full range of experiences a subject might have faced. The integration process is not one that should be limited to the sessions with the therapist, and is a process that will likely continue to unfold beyond the visits in clinic. The therapist might encourage the participant to use methods such as spending time in nature, exercise, or creative expression to help facilitate the process further. The subject might also be encouraged to discuss experiences with their friends, family, and / or support network. The role of the integration sessions is not to cover and work on every experience, but to empower the participant by building their 2026204976   25 Jun 2026 capacity to experientially process information safely. This enables the participant to continue selfdirected integration, even outside of study visits. In some embodiments, the subject participates in at least one psychological support session after administration of the psilocybin (“post-administration psychological support session”). In some embodiments, a post-administration psychological support session may be held on the same day as the psilocybin session, after the effects of the psilocybin have substantially worn off. In some embodiments, a post-administration psychological support session may be held the day after the psilocybin session. In some embodiments, a postadministration psychological support session may be held two days after the psilocybin session. In some embodiments, a post-administration psychological support session may be held three days after the psilocybin session. In some embodiments, a post-administration psychological support session may be held about one week after the psilocybin session. In some embodiments, a post-administration psychological support session may be held about two weeks after the psilocybin session. In some embodiments, a post-administration psychological support session may be held about one month after the psilocybin session. In some embodiments, a postadministration psychological support session may be held about three months after the psilocybin session. In some embodiments, a post-administration psychological support session may be held about six months after the psilocybin session. In some embodiments, a post-administration psychological support session may be held about twelve months after the psilocybin session. In some embodiments, the subject may participate in one, two, three, four, five, six, seven, or eight post-administration psychological support sessions. In some embodiments, the subject may participate in at least two, or at least three post-administration psychological support sessions. The post-administration psychological support sessions may be individual sessions, wherein a subject meets one-on-one with a therapist. In some embodiments, the psychological support sessions may be group sessions, wherein more than one subject meets with a single therapist, or more than one therapist. In some embodiments, one or more of the subject’s family members or friends may be present at the post-administration psychological support session(s). In some embodiments, the post-administration psychological support session may focus on integration of the psilocybin experience. Integration may involve processing a psychedelic experience in a therapeutic context. Integration may comprise psychological and somatic 2026204976   25 Jun 2026 processing of the experience and a successful assimilation of insights into the subject’s life for the purpose of growth, healing and / or well-being. During an integration session, a subject may be encouraged to talk about and reflect upon their experiences during the psilocybin session. In some embodiments, integration may comprise an external expression of the psilocybin experience, such as choice of words, tone of voice, gestures, and / or particular physical activities (yoga, exercise, bodywork, etc.) In some embodiments, integration comprises creatively expressing any insights or experiences gained during a psilocybin experience, for example through poetry, art, music / singing, dance, writing ordrawing. In some embodiments, the subject may be encouraged to reflect on both the thoughts and the feelings that he or she underwent during the psilocybin session, as well as to express those ideas and emotions into a concrete form that can serve as a tool for continuing to remember and integrate those lessons into the future. In some embodiments, the subject may be encouraged to acknowledge and connect with the range of the emotional cognitive and physical experiences of the psilocybin session, and relate them to current experiences in their life situation. This may be accomplished, for example, by discussing them initially with their therapist, and perhaps later with their family, friends, and support circle. Integration helps accommodate changes in emotional states as new insights are generated and integrated. When further explored through oscillating attention between foreground and background thoughts and emotions, such insights may lead to natural and effortless changes in perspectives or behaviors. In some embodiments, the integration process is not limited to initial integration meetings with the therapist, but continues to unfold spontaneously through a participant’s own processing and actions in everyday life. In the case of a low-intensity experience, the integration process might focus on the mental content that emerged during the hours of relaxation and introspection. This might also include reactions to what might have been an unremarkable experience, such as feeling of disappointment, anger, relief etc. Psychological Support Provided Remotely In some embodiments, psychological support may be provided remotely to a subject. For example, a therapist providing psychological support may not be in the same room, the same building, or in the same facility as a subject. Remote psychological support may be provided, for example by telephone (i.e., by voice call), by video call or video conference, by text, or by email. 2026204976   25 Jun 2026 In some embodiments, a pre-administration therapy session is conducted remotely. In some embodiments, a post-administration therapy session (e.g., an integration session) is conducted remotely. In some embodiments, psychological support is provided remotely during the subject’s psilocybin session. For example, in some embodiments, the subject takes the psilocybin in his or her own home, and a therapist provides psychological support by voice call, video call, text, email, etc., for at least 4-8 hours after the subject has taken the drug. In some embodiments, the subject takes the psilocybin in an administration facility as described herein, and the therapist provides psychological support to the subject a therapist provides psychological support by voice call, video call, text, email, etc., for at least 4-8 hours after the subject has taken the drug In some embodiments, remote psychological support is provided to the subject using a digital or electronic system. In some embodiments, the digital or electronic system may comprise one or more of the following features: • The digital or electronic system securely connects patients with one or more therapists or physicians for “virtual visits.” These virtual visits may be introductory or routine. • The digital or electronic system allows a subject to qualify, prequalify, or register for a psilocybin-based clinical trial, or a psilocybin-based psychological support session. • The digital or electronic system is configured to help therapists and / or physicians manage and interact with patients. For example, the electronic system may allow the therapist to share documents with subjects, keep notes about sessions, or schedule future sessions. • The digital or electronic system is configured to provide alerts for crisis intervention. For example, the digital or electronic system may allow the subject to contact the therapist if they are feeling anxiety or otherwise urgently need to talk to the therapist. • The digital or electronic system is configured to help prepare the subject for a visit with their therapist and / or physician. For example, the digital or electronic system may contain information regarding psilocybin, the therapeutic protocol, etc. • The digital or electronic system is configured to allow the therapist to provide psychological support during the subject’s psilocybin session. For example, the system may comprise a video calling or chat feature. 2026204976   25 Jun 2026 • The digital or electronic system is configured to allow the therapist to provide psychological support during a post-administration session (e.g., an integration session). • The digital or electronic system is configured to track the subject’s adherence to the treatment regimen or goals. • The digital or electronic system is configured to assess one or more clinical endpoints in the subject. For example the system may comprise one or more questionnaires or exercises for the subject to complete. Results may be made available to the subject’s physician and / or therapist. In some embodiments, the digital or electronic system is an “app” for use on a mobile phone or a computer. In some embodiments, the digital or electronic system is a website. In some embodiments, the digital or electronic system comprises a “chat” feature which allows communication between the subject and the therapist in real time. In some embodiments, the website comprises a video calling feature, which allows for the therapist to communicate with the subject using video communication. In some embodiments, the digital or electronic system is configured to allow a single therapist to provide psychological support to one or more subjects at or around the same time. In some embodiments, psychological support sessions may be pre-recorded (e.g., audio or video recording) and provided to the subject for use at the subject’s convenience via the digital or electronic system. Administration Facility, “Set and Setting” As used herein, the term “set and setting” refers to the subject’s mindset (“set”) and the physical and social environment (“setting”) in which the user has the psilocybin session. In some embodiments, the psilocybin may be administered in a particular set and setting. In some embodiments, the set and setting is controlled, to the extent possible, to maximize therapeutic benefit of the psilocybin session. In some embodiments, the psilocybin is administered by in a facility specifically designed for psilocybin administration. Administration of the psilocybin to the subject in a facility where the subject feels safe and comfortable may help ease anxiety in the subject, and may facilitate maximum clinical benefit. Psilocybin may be administered to a subject, for example, in the subject’s home or at a clinical facility. 2026204976   25 Jun 2026 In some embodiments, the psilocybin is administered to the subject in a facility (e.g., a room) with a substantially non-clinical appearance. For example, the psilocybin can be administered in a room that comprises soft furniture (e.g., plush couches, chairs, or pillows) and / or plants. In some embodiments, the room may be decorated using muted colors (e.g., greyed, dulled, ordesaturated colors). In some embodiments, the light in the room is dimmed and / or light levels are kept or adjust to be relatively low. In some embodiments, the room lighting is adjusted for intensity and / or color. In some embodiments, a virtual reality or augmented reality system (e.g., computer with visual / graphical and auditory outputs) is used. In some embodiments, the room comprises a sound system, for example a high-resolution sound system. In some embodiments, the sound system can allow for simultaneous ambient and earphone listening. In some embodiments, the subject may bring meaningful photographs or objects into the administration room. In some embodiments, the room comprises a couch. In some embodiments, the room comprises a bed. In some embodiments the room comprises more than one couch or bed, such as 2, 3, 4, 5, 6, 7, 8, 9, or 10 couches or beds. In some embodiments, the subject sits on or lies in the couch or bed for approximately 4-8 hours, or a substantial fraction thereof, immediately after administration of the psilocybin. In some embodiments, the subject listens to music for approximately 4-8 hours, or a substantial fraction thereof, immediately after administration of the psilocybin. In some embodiments, the subject wears an eye mask for approximately 4-8 hours, or a substantial fraction thereof, immediately after administration of the psilocybin. In some embodiments, the subject is provided with a weighted blanket. In some embodiments, each subject is supervised by one therapist during the psilocybin session. In some embodiments, each subject is supervised by more than one therapist during the psilocybin session, such as two therapists, three therapists, four therapists, or five therapists. In some embodiments, one therapist multiple subjects, wherein each subject is participating in a psilocybin session. For example, one therapist may supervise two, three, four, five, six, seven, eight, nine, or ten subjects. Embodiments of the disclosure include use of additional tools and / or technique(s) with dosage / administration, including various transcranial magnetic stimulation (TMS) methods and protocols, for example, prior or subsequent to one or more dosing(s), biofeedback devices, etc. 2026204976   25 Jun 2026 Some embodiments can be used with a digital health product or digital solution. Teachings of the disclosure include utilization of such digital health products and / or related digital biomarkers as diagnostic and / or prognostic tools for patient monitoring and management pre-treatment, during treatment, and / or post treatment. Digital biomarkers can include, by way of non-limiting example: Number of and / or time of phone calls / e-mails / texts; word length in text communication; Gestures used (taps, swipes, or other); Gyroscope derived information e.g. orientation of the phone; Acceleration of the phone; Keystroke patterns; Location derived information from GPS; facial expressions and / or microexpressions; voice or vocal markers; natural language processing; social media use; sleep patterns; specific words or emojis used or not used; and / or the like. For example, in one embodiment, a digital health product can be utilized to determine dosing amount and / or dosing frequency, indicator of a need for re-dosing, re-dosing amount, a warning or alert, as tracking of compliance, etc. In some embodiments, methods of treatment can include providing a clearance time fora subject or patient, such one or more medications is not present or substantially cleared from the system of the subject / patient. For example, methods of treatment can be configured such that, upon administration, the subject is not taking other serotonergic medications such as: selective-serotonin reuptake inhibitors, selective norepinephrine reuptake inhibitors, tricyclic antidepressants, monoamine oxidase inhibitors and / or antipsychotics. In some embodiment, the method of treatment include treatment concurrently with one or more medications, including but not limited to selective-serotonin reuptake inhibitors, selective norepinephrine reuptake inhibitors, tricyclic antidepressants, and / or monoamine oxidase inhibitors. In some embodiments, the method include treatment such that subjects or patients take concomitant compounds or medications, including but not limited to benzodiazepines, cannabidiol (CBD) and / or other cannabinoids (e.g., THC (tetrahydrocannabinol); THCA (tetrahydrocannabinolic acid); CBD (cannabidiol); CBDA (cannabidiolic acid); CBN (cannabinol); CBG (cannabigerol); CBC (cannabichromene); CBL (cannabicyclol); CBV (cannabivarin); THCV (tetrahydrocannabivarin); CBDV (cannabidivarin); CBCV (cannabichromevarin); CBGV (cannabigerovarin); CBGM (cannabigerol monomethyl ether); CBE (cannabielsoin); CBT (cannabicitran); and / or the like) magnesium, Levomefolic acid, e.g., for a period of time prior to, just prior to, and / or at the same time as receiving psilocybin. In some embodiments, the method includes treatment such that a subject has not taken one or more medications, particularly has not taken one or more serotonergic medications for at 2026204976   25 Jun 2026 least 2 days, at least, 3 days, at least 4 days, at least 5 days, at least six days, at least 1 week, at least 2, 3, or 4 weeks before administration of the disclosed psilocybin compound. In some embodiments, the method and / or treatment can comprise subperceptual-dosing (e.g., a dose of less than 3mg, 2.5mg, 2mg, 1.5mg, 1mg, 0.9mg, 0.8mg, 0.7mg, 0.6mg, 0.5mg, 0.4mg, 0.3mg, 0.2mg, or 0.1 mg) prior to and / or following the administration of a relatively larger single dose or multiple doses (given a few days to a few weeks apart), where the relatively larger single dose or multiple doses is one or more of 5mg or more, 10mg or more, 15mg or more, 20mg or more, 25mg or more, 30mg or more, 35mg or more, 40mg or more, 45mg or more, 50mg or more. Embodiments of the disclosure include method utilizing a digital biomarker, for example, as a diagnostic and / or prognostic tool for patient management pre-, during and / or post treatment with psilocybin wherein the digital biomarker is one or more biomarkers associated with executive function, cognitive control, working memory, processing speed, and / or emotional valence. In some embodiments the digital biomarker is identified from patterns in smartphone use such as swipes, taps, and other touchscreen activities, andean be scientifically validated to provide measurements of subject status, such as cognition and mood, including, by way of nonlimiting example, as disclosed in one or more of the following, each of which is herein expressly incorporated by reference for all purposes: US20170086727, US20170258382, US20170258383, US20170287348, US10148534, US9737759, and / or US10231651. Biomarkers which may serve as a diagnostic and I or prognostic tool for patient management pre, during and / or post treatment may be identified using one or more of: Number of and I or time of phone calls / e-mails / texts; word length in text communication; Gestures used (taps, swipes, or other); Gyroscope derived information e.g. orientation of the phone; Acceleration of the phone; Keystroke patterns; Location derived information from GPS; facial expressions and / or microexpressions; voice or vocal markers; natural language processing; social media use; sleep patterns; specific words oremojis used or not used; and / or the like. In some embodiments, health components and / or connected biomonitors and / or smart devices / wearables can be utilized to collect information to be used in diagnostic and / or prognostic outputs. For example, in some embodiments, a heart rate monitor or similar device can collect a subject’s data and heart rate variability (for example only, as disclosed in US10058253, the entirety of which is herein incorporated by reference) can be used to assess / determine a metric relating to the subject’s 2026204976   25 Jun 2026 current emotional state, relative change in emotional state, etc., which can be used in determining a new or follow-on treatment plan, adjusting a treatment plan, etc. In accordance with a further aspect of the disclosure there is provided a method of assessing a subject pre, during and / or post treatment of a central nervous system disorder to determine whether to provide a psilocybin treatment or a further psilocybin treatment comprising monitoring one or more biomarkers associated with executive function, cognitive control, working memory, processing speed, and emotional valence, and determining the treatment based on an outcome. The method can further comprise the step of administering psilocybin for a first or a subsequent time. In some embodiments, the biomarker is identified from patterns in smartphone use such as swipes, taps, and other touchscreen activities, and are scientifically validated to provide measurements of cognition and mood. For example, in some instances, the pattern is identified using one or more of: Number of and I or time of phone calls / e-mails / texts; word length in text communication; Gestures used (taps, swipes, or other); Gyroscope derived information e.g. orientation of the phone; Acceleration of the phone; Keystroke patterns; Location derived information from GPS; facial expressions and / or microexpressions; voice or vocal markers; natural language processing; social media use; sleep patterns; specific words or emojis used or not used; and / or the like. Embodiments include a method of assessing a subject pre, during and / or post treatment of a central nervous system disorder to determine whether to provide a psilocybin treatment or a further psilocybin treatment comprising monitoring one or more biomarkers associated with executive function, cognitive control, working memory, processing speed, and emotional valence, and determining the treatment based on an outcome; the method can further comprise administering psilocybin for a first or a subsequent time. In some embodiments, the disclosure provides for treating 2 or more subjects, the method comprising administering to each subject a therapeutically-effective dose of psilocybin at the same time or substantially the same time (e.g., dosed within several minutes of each other, within 5, 10, 15, 20, 25, or 30 min of each other), wherein each subject is aware of the other subject also receiving treatment. In some embodiments, the subjects are in the same room. In some embodiments, the subjects are in different rooms. 2026204976   25 Jun 2026 In some embodiments, the disclosure provides a method of treating a subject, the method comprising administering to the subject a therapeutically-effective dose of psilocybin, and providing a virtual reality I immersive reality digital tool. In some embodiments, the light in the room is dimmed and / or light levels are kept or adjusted to be relatively low. In some embodiments, darkened glasses or eye shades are provided. In some embodiments, the room lighting is adjusted for intensity and / or color. In some embodiments, a virtual reality or augmented reality system (e.g., computer with visual / graphical and auditory outputs) is used. Subjects In some embodiments, the subject is a male. In some embodiments, the subject is a female. In some embodiments, the female subject is pregnant or post-partum. In some embodiments, the subject is attempting to reduce or eliminate their use of a pharmaceutical agent, such as an anti-depressant or an anti-epileptic drug. In some embodiments, the subject is attempting to reduce or eliminate their use of the pharmaceutical agent before becoming pregnant, having surgery or other medical procedure, or starting to use different pharmaceutical agent. The subject may be a geriatric subject, a pediatric subject, a teenage subject, a young adult subject, or a middle aged subject. In some embodiments, the subject is less than about 18 years of age. In some embodiments, the subject is at least about 18 years of age. In some embodiments, the subject is about 5-10, about 10-15, about 15-20, about 20-25, about 25-30, about 30-35, about 35-40, about 40-45, about 45-50, about 50-55, about 55-60, about 60-65, about 65-70, about 70-75, about 75-80, about 85-90, about 90-95, or about 95-100 years of age. The subject may have a chronic disease or a terminal disease. In some embodiments, the subject may have a life-altering disease or condition (such as the loss of a limb or onset of blindness). The subject may have recently been diagnosed with a disease, disorder, or condition. For example, the subject may have been diagnosed within 1 month, within 3 months, within 6 months, or within 1 year. In some embodiments, the subject may have been living with a disease, disorder, or condition for an extended period time, such as at least 6 months, at least 1 year, at least 3 years, at least 5 years, or at least 10 years. 2026204976   25 Jun 2026 In some embodiments, the subject may be a cancer patient, such as a Stage 4 or terminal cancer patient. In some embodiments, the subject may have been determined to have a limited time to live, such as less than 1 year, less than 6 months, or less than 3 months. The subject may have previously taken a psychedelic drug, or may have never previously 5 taken a psychedelic drug. For example, the subject may or may not have previously taken psilocybin, a psilocybin mushroom (“magic mushroom”), LSD (lysergic acid diethylamide or acid), mescaline, or DMT (N,N-Dimethyltryptamine). In some embodiments, the subject may have previously taken one or more serotonergic antidepressants (e.g., selective serotonin reuptake inhibitors (SSRIs)). In some embodiments, 10 the subject has never previously taken a serotonergic antidepressant. In some embodiments, the subject has not taken any serotonergic antidepressants for at least 2 weeks, at least 4 weeks, or at least 6 weeks prior to receiving psilocybin. In some embodiments, the subject may have previously received electroconvulsive therapy (ECT). In some embodiments, the subject has not received any ECT for at least 2 weeks, 15 at least 4 weeks, or at least 6 weeks prior to receiving psilocybin. The subject may have a medical condition that prevents the subject from receiving a particular medical therapy (such as an SSRI or ECT). In some embodiments, the subject may have previously had an adverse reaction to a particular medical therapy (such as an SSRI or ECT). In some embodiments, a prior medical therapy (such as an SSRI or ECT) was not effective 20 in treating a disease, disorder, or condition in the subject. Diseases, Disorders, and / or Conditions to be Treated Provided herein are methods of treating a subject in need thereof, the method comprising administering to the subject a therapeutically-effective dose of therapeutically effective amount of psilocybin, a prodrug of psilocybin, an active metabolite of psilocybin, or a prodrug of an active 25 metabolite of psilocybin. Anxiety Disorders 2026204976   25 Jun 2026 In some embodiments, a method for treating one or more anxiety disorders in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. In some embodiments, the active metabolite is psilocin. As used herein, the term “anxiety disorder” refers to a state of apprehension, uncertainty, and / or fear resulting from the anticipation of an event and / or situation. Anxiety disorders cause physiological and psychological signs or symptoms. Non-limiting examples of physiological symptoms include muscle tension, heart palpitations, sweating, dizziness, shortness of breath, tachycardia, tremor, fatigue, worry, irritability, and disturbed sleep. Non-limiting examples of psychological symptoms include fear of dying, fear of embarrassment or humiliation, fear of an event occurring, etc. Anxiety disorders also impair a subject’s cognition, information processing, stress levels, and immune response. In some embodiments, the methods disclosed herein treat chronic anxiety disorders. As used herein, a “chronic” anxiety disorder is recurring. Anxiety disorders are thought to be the most prevalent class of psychiatric disorders, with over 60 million people in Europe affected each year. While, according to epidemiological surveys, it is estimated that one third of the population is affected by an anxiety disorder during their lifetime. Non-limiting examples of anxiety disorders include acute stress disorder, anxiety due to a medical condition, generalized anxiety disorder, panic disorder, panic attack, a phobia, post-traumatic stress disorder, obsessive-compulsive disorder, separation anxiety disorder, social anxiety disorder, substance-induced anxiety disorder, or selective mutism. In some embodiments, the subject in need thereof develops an anxiety disorder after experiencing the effects of a disease. The effects of a disease include diagnosis of an individual with said disease, diagnosis of an individual’s loved ones with said disease, social isolation due to said disease, quarantine from said disease, or social distancing as a result of said disease. In some embodiments, an individual is quarantined to prevent the spread of the disease. In some embodiments, the disease is COVID-19, SARS, or MERS. In some embodiments, a subject develops an anxiety disorder after job loss, loss of housing, or fear of not finding employment. In some embodiments, an anxiety disorder comprises a medical diagnosis based on the criteria and classification from Diagnostic and Statistical Manual of Medical Disorders, 5th Ed. In 2026204976   25 Jun 2026 one embodiment, an anxiety disorder comprises a medical diagnosis based on an independent medical evaluation. In some embodiments, a method for treating a generalized anxiety disorder in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. Generalized anxiety disorder is characterized by excessive anxiety and worry, fatigue, restlessness, increased muscle aches or soreness, impaired concentration, irritability, and / or difficulty sleeping. In some embodiments, a subject with generalized anxiety disorder does not have associated panic attacks. In some embodiments, a method for treating a social anxiety disorder in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. As used herein, “social anxiety disorder” is a marked fear or anxiety about one or more social situations in which the individual is exposed to possible scrutiny by others. Non-limiting examples of situations which induce social anxiety include social interactions (e.g., having a conversation, meeting unfamiliar people), being observed (e.g., eating or drinking), and performing in front of others (e.g., giving a speech). In some embodiments, the social anxiety disorder is restricted to speaking or performing in public. In some embodiments, treating according to the methods of the disclosure reduces or ameliorates a symptom of social anxiety disorder. In some embodiments, the reduction / amelioration in a symptom of a social anxiety disorder can be measured using any one of the assessments described herein. In some embodiments, after treating the symptom is reduced compared to prior to treating by about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, a method for treating panic disorder in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. A subject with panic disorder experiences panic attacks, which are sudden feelings of terror when there is no real danger. A subject experiencing a panic attack may feel as if he or she is losing control. In some embodiments, a subject with a panic disorder has physical symptoms, including but not limited to, a fast heartbeat, chest or stomach pain, breathing difficulty, weakness or dizziness, sweating, feeling hot or cold, tingly or numb hands. In some embodiments, treating according to the methods of the disclosure reduces the incidence of panic attacks compared to prior to said treatment. In some embodiments, treating according to the 2026204976   25 Jun 2026 methods of the disclosure reduces the number of panic attacks per month by about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, a method for treating a phobia in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. A phobia is an irrational fear of something that is unlikely to cause harm. Phobias cause anxiety, fear, and panic. In some embodiments, the phobia is agoraphobia, acrophobia, aerophobia, arachnophobia, astraphobia, autophobia, claustrophobia, homophobia, hydrophobia, ophidiophobia, zoophobia, alektorophobia, onomatophobia, pogonophobia, nephophobia, and cryophobia. In some embodiments, the subject has agoraphobia. In some embodiments, the phobia is a specific phobia. In some embodiments, the specific phobia is an animal phobia, natural environment phobia, blood-injection-injury phobia, or situational phobia. In some embodiments, after treating according to the disclosure, one or more symptoms of a phobia are reduced. In some embodiments, a method for treating a post traumatic stress disorder (PTSD) in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. As used herein, the term “post traumatic stress disorder” refers to a condition developed after experiencing and / or witnessing a traumatic event or learning that a traumatic event has happened to a loved one. Non-limiting examples of traumatic events include exposure to war, rape or sexual violence, a physical attack, disease, a mugging, childhood physical or sexual violence, kidnapping or being taken hostage, terrorist attacks, torture, nature disasters and / or severe accidents. In some embodiments, the post-traumatic stress disorder is caused by trauma associated with a pandemic due to an infectious disease, such as, but not limited to COVID-19. For example, the trauma may be caused by a pandemic, such as COVID-19, a mandated quarantine, social isolation, damage to one’s health, or damage to a family member’s health as a result of the infectious disease. In some embodiments, trauma results from job loss. In some embodiments, trauma results from loss of housing. In some embodiments, trauma results from fear of not finding employment. In some instances, a person shows symptoms of post traumatic stress disorder within a week of experiencing of the traumatic event. In some instances, a person shows symptoms of post traumatic stress disorder within a month of experiencing of the traumatic event. In some 2026204976   25 Jun 2026 instances, a person shows symptoms of post traumatic stress disorder within a year of experiencing of the traumatic event. In some instances, a person shows symptoms of post traumatic stress disorder after a year or more of experiencing of the traumatic event. In some instances, post traumatic stress disorder comprises a person re-experiencing the trauma event 5 through intrusive distressing recollections of the event, flashbacks, and / or nightmares. In some instances, a symptom of post traumatic stress disorder comprises emotional numbness and avoidance of places, people, and activities that are reminders of the trauma. In some instances, a symptom of post traumatic stress disorder comprises increased arousal such as difficulty sleeping and concentrating, feeling anxious, and being easily irritated and angered. 10           In some embodiments, a method for treating moral injury in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. Moral injury may occur in individuals / populations with PTSD or at risk of developing PTSD (e.g. veterans or physicians). Moral injury may result from when an individual trangesses their own moral boundaries, often in high-stakes situations and where pressure is 15 applied by higher authorities. In some embodiments, a method for treating acute stress disorder in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. A subject may be determined to have acute stress disorder if the subject exhibits PTSD symptoms that have been present for about three days to about 1 20 month. In some embodiments, a method for treating adjustment disorder in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. A subject may be determined to have adjustment disorder when the traumatic event experienced by a subject and / or the subject’s symptoms do not meet 25 the criteria required for a diagnosis of PTSD. In some embodiments, a method for treating an obsessive-compulsive and related disorder in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. In some embodiments, the obsessive-compulsive and relating disorder is obsessive compulsive disorder, body dysmorphic 30 disorder, hoarding disorder, dermatillomania, trichotillomania, excoriation, substance-induced 2026204976   25 Jun 2026 obsessive compulsive and related disorder, or an obsessive-compulsive disorder due to another medical condition, or a combination thereof. In some embodiments, a method for treating obsessive-compulsive disorder (OCD) in a subject in need thereof comprising administering the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. An estimated 2-4% of adults meet the DSM criteria for OCD. There are mixed findings regarding gender differences, but OCD appears to be more common in males in childhood and in females in adolescence and adulthood. Up to 15% of those diagnosed with OCD have a history of suicide attempts. Pregnant and postpartum women have been found to exhibit higher prevalence of OCD than general populations. The prevalence of OCD in those over the age of 15 in Canada is estimated to be 1 in 100 people, this diagnosis was associated with adverse childhood experiences and likelihood of having lower income. Mortality rate of those with OCD is significantly higher even after adjusting for somatic comorbidities. Quality of life is significantly lower in those with OCD. OCD involves the presence of impulses or urges associated with anxiety (obsessions) and repetitive behaviors or mental acts that exist in response to obsessions (compulsions). A subject is diagnosed with obsessive compulsive disorder if the obsessions and compulsions significantly impact daily life. In some embodiments, a subject with OCD does not realize that the obsessions and compulsions are excessive or unreasonable. As used herein, an “obsession” is an intrusive, repetitive, and / or persistent thought, urge, and / or image that causes distress. In some embodiments, obsessions cannot be suppressed or ignored. In some embodiments, a subject with OCD is unaware that these thoughts are not a real threat but are generated by their mind. As used herein, a “compulsion” is excessive and repetitive ritualistic behaviour that must be performed to prevent something bad from happening. In some embodiments, a compulsion is performed by a subject to reduce anxiety caused by obsessive thoughts. In some embodiments, a subject with OCD treated according to the methods described herein, performing one or more compulsions takes up at least about 15 minutes to about 20 hours per day, for example, about 15 minutes per day, about 30 minutes per day, about 45 minutes per day, about 1 hour per day, about 1.5 hours per day, about 2 hours per day, about 2.5 hours per day, about 3 hours per day, about 3.5 hours per day, about 4 hours per day, about 4.5 hours per day, about 5 hours per day, about 5.5 hours per day, about 6.0 hours per day, about 6.5 hours per day, about 7 hours per 2026204976   25 Jun 2026 day, about 7.5 hours per day, about 8 hours per day, about 8.5 hours per day, about 9 hours per day, about 9.5 hours per day, about 10 hours per day, about 10.5 hours per day, about 11 hours per day, about 11.5 hours per day, about 12 hours per day, about 12.5 hours per day, about 13 hours, about 13.5 hours, about 14 hours, about 14.5 hours, about 15 hours, about 15.5 hours per day, about 16 hours per day, about 16.5 hours per day, about 17 hours per day, about 17.5 hours per day, about 18 hours per day, about 18.5 hours per day, about 19 hours per day, about 19.5 hours per day, or about 20 hours per day. In some embodiments, after treating according to the methods of the disclosure, the length of time a subject spends performing compulsions compared to prior to said treating decreases by at least about 10 %, at least about 15 %, at least about 20 %, at least about 25 %, at least about 30 %, at least about 35%, at least about 40 %, at least about 45 %, at least about 50 %, at least about 55 %, at least about 60 %, at least about 65 %, at least about 70 %, at least about 75 %, at least about 80 %, at least about 85 %, at least about 90 %, at least about 95 %, or at least about 100 %. In some embodiments, the obsessive compulsive and related disorder is trichotillomania. Trichotillomania is a disorder that involves recurrent, irresistible urges to pull out hair from your scalp, eyebrows, or other areas of your body. In some embodiments, a subject with trichotillomania repeatedly attempts to decrease or stop the recurrent hair pulling. In some embodiments, a subject with trichotillomania has hair loss that may cause bald spots. In some embodiments, a subject with trichotillomania ingests the pulled hair or parts thereof. In some embodiments, a subject with trichotillomania that ingests the pulled hair or parts thereof develops a trichobezoar or a hairball in the intestines or stomach. In some embodiments, after treating according to the methods of the disclosure, a subject’s trichotillomania improves compared to prior to said treatment. In some embodiments, the subject with an anxiety disorder has one or more comorbidities. Non-limiting examples of comorbidities include endocrine and / or metabolic diseases, gastrointestinal diseases, cardiovascular diseases, psychiatric disorders, ora neuroses. In some embodiments, the comorbidity is anxiety disorder, depressive disorder, psychotic disorder, developmental disorder, eating disorder, attention-deficit hyperactivity disorder (ADHD), COVID-19, disorders associated with COVID-19, attention deficit disorder (ADD), autism spectrum disorder (ASD), tic disorder, bipolar disorder, conduct disorder, mental retardation, or a combination thereof. In some embodiments, the comorbidity is a mood disorder, major depressive disorder, bipolar disorder, schizophrenia, an eating disorder, attention deficit / hyperactivity disorder, epilepsy, cardiovascular disease, migraine, irritable bowel syndrome, dementia, 2026204976   25 Jun 2026 Alzheimer’s disease, Parkinson’s disease, or combinations thereof. In some embodiments, the comorbidity is depression, generalized anxiety, agoraphobia, or panic disorder. In some embodiments, the comorbidity is major depression. In some embodiments, the comorbidity is an eating disorder. In some embodiments, the comorbidity is ADHD. In some embodiments, the comorbidity is ASD. In some embodiments, the comorbidity is COVID-19, disorders associated with COVID-19, or both. In some embodiments, the comorbidity is COVID-19. In some embodiments, the comorbidity is a disorder associated with COVID-19. Non-limiting examples of disorders associated with COVID-19 include post-traumatic stress disorder, anxiety disorder, acute stress disorder, adjustment disorder, or panic disorder. In some embodiments, the comorbidity is major depressive disorder, bipolar disorder, irritable bowel disease, or irritable bowel syndrome. In some embodiments, no other treatment is administered to the subject to treat anxiety disorder after administration of psilocybin. In some embodiments, the subject with anxiety disorder is administered at least one additional therapy and / or therapeutic. In some embodiments, administration of an additional therapy and / or therapeutic is prior to administration of psilocybin. In some embodiments, administration of an additional therapy and / or therapeutic is after administration of psilocybin. In some embodiments, administration of an additional therapy and / or therapeutic is concurrent with administration of psilocybin. In some embodiments, the additional therapy is an antidepressant, an anticonvulsant, lisdexamfetamine dimesylate, an antipsychotic, an anxiolytic, an anti-inflammatory drug, a benzodiazepine, an analgesic drug, a cardiovascular drug, or combinations thereof. In some embodiments, the additional therapy is a benzodiazepine. In some embodiments, the benzodiazepine is diazepam or alprazolam. In some embodiments, the additional therapy is a N-methyl-D-aspartate (NMDA) receptor antagonist. In some embodiments, the NMDA receptor antagonist is ketamine. In some embodiments, the additional therapy is an antidepressant. In some embodiments, an antidepressant indirectly affects a neurotransmitter receptor, e.g., via interactions affecting the reactivity of other molecules at a neurotransmitter receptor. In some embodiments, an antidepressant is an agonist. In one embodiment, an antidepressant is an antagonist. In some 2026204976   25 Jun 2026 71 embodiments, an antidepressant acts (either directly or indirectly) at more than one type of neurotransmitter receptor. In some embodiments, an antidepressant is chosen from buproprion, citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, mirtazapine, paroxetine, reboxetine, sertraline, and venlafaxine. In some embodiments, the antidepressant is a tricyclic antidepressant ("TCA"), selective serotonin reuptake inhibitor ("SSRI"), serotonin and noradrenaline reuptake inhibitor ("SNRI"), dopamine reuptake inhibitor ("DRI"), noradrenaline reuptake Monoamine oxidase inhibitor (“MAOI”), including inhibitor (“NRU”), dopamine, serotonin and noradrenaline reuptake inhibitor (“DSNRI”), a reversible inhibitor of monoamine oxidase type A (RIMA), or combination thereof. In some embodiments, the antidepressant is a TCA. In some embodiments, the TCA is imipramine or clomipramine. In some embodiments, the anti-depressant is an SRI. In some embodiments, the SSRI is escitalopram, paroxetine, sertraline, fluvoxamine, fluoxetine, or combinations thereof. In some embodiments, the SNRI is venlafaxine. In some embodiments, the additional therapy is pregabalin. In some embodiments, the additional therapeutic is an anticonvulsant. In some embodiments, the anticonvulsant is gabapentin, carbamazepine, ethosuximide, lamotrigin, felbamate, topiramate, zonisamide, tiagabine, oxcarbazepine, levetiracetam, divalproex sodium, phenytoin, fos-phyenytoin. In some embodiments, the anticonvulsant is topiramate. In some embodiments, the additional therapeutic is an antipsychotic. In some embodiments, the antipsychotic is a phenothiazine, butryophenone, thioxanthene, clozapine, risperidone, olanzapine, or sertindole, quetiapine, aripiprazole, zotepine, perospirone, a neurokinin-3 antagonist, such as osanetant and talnetant, rimonabant.or a combination thereof. In some embodiments, the additional therapeutic is an anti-inflammatory drug. In some embodiments, the anti-inflammatory drug is a nonsteroidal antiinflammatory drugs (NSAIDS), steroid, acetaminophen (COX-3 inhibitors), 5-lipoxygenase inhibitor, leukotriene receptor antagonist, leukotriene A4 hydrolase inhibitor, angiotensin converting enzyme antagonist, beta blocker, antihistaminic, histamine 2 receptor antagonist, phosphodiesterase-4 antagonist, cytokine antagonist, CD44 antagonist, antineoplastic agent, 3-hydroxy-3-methylglutaryl coenzyme A inhibitor (statins), estrogen, androgen, antiplatelet agent, antidepressant, Helicobacter pylori inhibitors , proton pump inhibitor, thiazolidinedione, dualaction compounds, or combination thereof. 2026204976   25 Jun 2026 In some embodiments, the additional therapeutic is an anti-anxiolytic. In one embodiment, an anxiolytic is chosen from alprazolam, an alpha blocker, an antihistamine, a barbiturate, a beta blocker, bromazepam, a carbamate, chlordiazepoxide, clonazepam, clorazepate, diazepam, flurazepam, lorazepam, an opioid, oxazepam, temazepam, or triazolam. In some embodiments, the subject with anxiety disorder is administered at least one therapy. Non-limiting examples of therapies include transcranial magnetic stimulation, cognitive behavioral therapy, interpersonal psychotherapy, dialectical behavior therapy, mindfulness techniques, or acceptance, commitment therapy, or combinations thereof. In some embodiments, at least one sign or symptom of an anxiety disorder is improved following the administration of the psilocybin or active metabolite thereof. In some embodiments, a sign or symptom of an anxiety disorder is measured according to a diary assessment, an assessment by a clinician or caregiver, or a clinical scale. In some embodiments, psilocybin treatment causes a demonstrated improvement in one or more of the following: State-Trait Anxiety Inventory (STAI), Beck Anxiety Inventory (BAI), Hospital Anxiety and Depression Scale (HADS), Generalized Anxiety Disorder questionnaire-IV (GADQ-IV), Hamilton Anxiety Rating Scale (HARS), Leibowitz Social Anxiety Scale (LSAS), Overall Anxiety Severity and Impairment Scale (OASIS), Hospital Anxiety and Depression Scale (HADS), Patient Health Questionnaire 4 (PHQ-4), Social Phobia Inventory (SPIN), Brief Trauma Questionnaire (BTQ), Combat Exposure Scale (CES), Mississippi Scale for Combat-Related PTSD (M-PTSD), Posttraumatic Maladaptive Beliefs Scale (PMBS), Perceived Threat Scale (DRRI-2 Section: G), PTSD Symptom Scale -Interview for DSM-5 (PSS-l-5), Structured Interview for PTSD (SI-PTSD), Davidson Trauma Scale (DTS), Impact of Event Scale - Revised (IES-R), Posttraumatic Diagnostic Scale (PDS-5), Potential Stressful Events Interview (PSEI), Stressful Life Events Screening Questionnaire (SLESQ), Spielberger’s Trait and Anxiety, Generalized Anxiety Disorder 7-ltem Scale, The Psychiatric Institute Trichotillomania Scale (PITS), The MGH Hairpulling Scale (MGH-HPS), The NIMH Trichotillomania Severity Scale (NIMH-TSS).The NIMH Trichotillomania Impairment Scale (NIMH-TIS), The Clinical Global Impression (CGI), the Brief Social Phobia Scale (BSPS), The Panic Attack Questionnaire (PAQ), Panic Disorder Severity Scale, Florida Obsessive-Compulsive Inventory (FOCI), The Leyton Obsessional Inventory Survey Form, The Vancouver Obsessional Compulsive Inventory (VOCI), The Schedule of Compulsions, Obsessions, and Pathological Impulses (SCOPI), Padua Inventory-Revised (Pl-R), Quality of Life (QoL), The Clinical Global Improvement (CGI) scale, The Yale-Brown Obsessive-Compulsive Scale (Y-BOCS),The Yale-Brown Obsessive-Compulsive Scale Second Edition (Y-BOCS-II), The Dimensional Yale-Brown 2026204976   25 Jun 2026 Obsessive-Compulsive Scale (DY-BOCS), The National Institute of Mental Health-Global Obsessive-Compulsive Scale (NIMH-GOCS), The Yale-Brown Obsessive-Compulsive Scale Self-Report (Y-BOCS-SR), The Obsessive-Compulsive Inventory - Revised (OCI-R), and the Dimensional Obsessive-Compulsive Scale (DOCS), ora combination thereof. In some embodiments, after treating with psilocybin, a sign or symptom of OCD is improved as demonstrated on one of the following scales: Florida Obsessive-Compulsive Inventory (FOCI), The Leyton Obsessional Inventory Survey Form, The Vancouver Obsessional Compulsive Inventory (VOCI), Schedule of Compulsions, Obsessions, and Pathological Impulses (SCOPI), Padua Inventory-Revised (Pl-R), Quality of Life (QoL), The Clinical Global Improvement (CGI) scale, The Yale-Brown Obsessive-Compulsive Scale (Y-BOCS),The Yale-Brown Obsessive-Compulsive Scale Second Edition (Y-BOCS-II), The Dimensional Yale-Brown Obsessive-Compulsive Scale (DY-BOCS), The National Institute of Mental Health-Global Obsessive-Compulsive Scale (NIMH-GOCS), The Yale-Brown Obsessive-Compulsive Scale Self-Report (Y-BOCS-SR), The Obsessive-Compulsive Inventory-Revised (OCI-R), and The Dimensional Obsessive-Compulsive Scale (DOCS). In some embodiments, after treating with psilocybin, a sign or symptom of trichotillomania is improved as demonstrated on one of the following scales: the Psychiatric Institute Trichotillomania Scale (PITS), the Massachusetts General Hospital (MGH) Hairpulling Scale (MGH-HPS), the National Institute for Mental Health (NIMH) Trichotillomania Severity Scale (NIMH-TSS), the NIMH Trichotillomania Impairment Scale (NIMH-TIS). In some embodiments, treating according to the methods of the disclosure results in an improvement in an anxiety disorder compared to pre-treatment of about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, according to any one of the diary assessments, assessments by a clinical or caregiver, or clinical scales, described herein. In some embodiments, treating according to the methods of the disclosure results in an improvement in an obsessive compulsive and related disorder compared to pre-treatment of about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, 2026204976   25 Jun 2026 about 85 %, about 90 %, about 95 %, or about 100 %, according to any one of the diary assessments, assessments by a clinical or caregiver, or clinical scales, described herein. In some embodiments, treating according to the methods of the disclosure results in an improvement in post-traumatic stress disorder compared to pre-treatment of about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, according to any one of the diary assessments, assessments by a clinical or caregiver, or clinical scales, described herein. In some embodiments, after administration of the psilocybin or active metabolite thereof, a subject has improved cognition, information processing, stress levels, immune system, or combinations thereof. In some embodiments, after administration of psilocybin or active metabolite thereof, at least one symptom of anxiety disorder is alleviated for a period of at least about 5 minutes to at least about 1 year, for example, at least one symptom of anxiety is alleviated for a period of at least about 5 minutes, at least about 15 minutes, at least about 30 minutes, at least about 45 minutes, at least about 1 hour, at least about 2 hours, at least 3 hours, at least about 4 hours, at least about 5 hours, at least about 6 hours, at least about 7 hours, at least about 8 hours, at least about 9 hours, at least about 10 hours, at least about 11 hours, at least about 12 hours, at least about 13 hours, at least about 14 hours, at least about 15 hours, at least about 16 hours, at least about 17 hours, at least about 18 hours, at least about 19 hours, at least about 20 hours, at least about 21 hours, at least about 22 hours, at least about 23 hours, at least about 24 hours, at least about 2 days, at least about 3 days, at least about 4 days, at least about 5 days, at least about 6 days, at least about 1 week, at least about 2 weeks, at least about 3 weeks, at least about 4 weeks, at least about 5 weeks, at least about 6 weeks, at least about 7 weeks, at least about 8 weeks, at least about 9 weeks, at least about 10 weeks, at least about 11 weeks, at least about 12 weeks, at least about 13 weeks, at least about 14 weeks, at least about 2 months, at least about 3 months, at least about 4 months, at least about 5 months, at least about 6 months, at least about 7 months, at least about 8 months, at least about 9 months, at least about 10 months, at least about 11 months, at least about 12 months, or more. In some embodiments, at least one symptom of anxiety is alleviated for a period of at least 1 month after administration of psilocybin. In some embodiments, at least one symptom of anxiety is alleviated for a period of at least 3 2026204976   25 Jun 2026 months after administration of psilocybin. In some embodiments, at least one symptom of anxiety is alleviated for a period of at least 1 year after administration of psilocybin. In some embodiments, after administration of psilocybin or active metabolite thereof, at least one symptom of anxiety disorder is alleviated within about 5 minutes to about 1 week, for example, about 5 minutes, about 15 minutes, about 30 minutes, about 45 minutes, about 1 hour, about 2 hours, at least 3 hours, about 4 hours, about 5 hours, about 6 hours, about 7 hours, about 8 hours, about 9 hours, about 10 hours, about 11 hours, about 12 hours, about 13 hours, about 14 hours, about 15 hours, about 16 hours, about 17 hours, about 18 hours, about 19 hours, about 20 hours, about 21 hours, about 22 hours, about 23 hours, about 24 hours, about 1 day, about 2 days, about 3 days, about 4 days, about 5 days, about 6 days, or about 7 days. In some embodiments, at least one symptom of anxiety is alleviated within 24 hours of administration of the psilocybin. In some embodiments, at least one symptom of anxiety is alleviated within 1 week of administration of the psilocybin. Eating Disorders In some embodiments, a method for treating one or more eating disorders in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. In some embodiments, the active metabolite is psilocin. As used herein, the term “eating disorder” refers to any of a range of psychological disorders characterized by abnormal or disturbed eating habits. In some embodiments, the eating disorder is pica, anorexia nervosa, bulimia nervosa, rumination disorder, avoidant / restrictive food intake disorder, binge-eating disorder, or combinations thereof. In some embodiments, the methods disclosed herein treat chronic eating disorders. As used herein, a “chronic” eating disorder is recurring. In some embodiments, an eating disorder comprises a medical diagnosis based on the criteria and classification from the Diagnostic and Statistical Manual of Medical Disorders, 5th Ed. In one embodiment, an eating disorder comprises a medical diagnosis based on an independent medical evaluation. In some embodiments, a method for treating pica in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is 2026204976   25 Jun 2026 disclosed herein. Pica is a disorder characterized by an appetite for substances that are largely non-nutritive. Individuals with the disorder pica compulsively eat non-nutritive items. Substances may include ice, hair, cigarette ashes, glue, paper, drywall, paint, sharp objects, metal, stone, soil, glass, feces, chalk, dirt, or dust. In some embodiments, an individual with pica also has an 5 intellectual disability, schizophrenia, or OCD. In some embodiments, an individual with pica has a nutritional deficiency. In some embodiments, the nutritional deficiency, is low levels of zinc or iron. In some embodiment, a subject with pica has experienced the disorder for at least 1 month, for example 1 month, 2 months, 3 months, 4 months, 5 months, 6 months, 7 months, 8 10 months, 9 months, 10 months, 11 months, 12 months, 1 years, 2 years, 3 years, 4 years, 5 years, 6 years, 7 years, 8 years, 9 years, 10 years, or more. In some embodiments, after treating according to the methods of the disclosure, an individual with pica stops eating non-nutritive items for at least 1 day, at least 2 days, at least 3 days, at least 4 days, at least 5 days, at least 6 days, at least 7 days, at least 2 weeks, at least 3 15 weeks, at least 4 weeks, at least 5 weeks, at least 1 month, at least 2 months, at least 3 months, at least 4 months, at least 5 months, at least 6 months, at least 7 months, at least 8 months, at least 9 months, at least 10 months, at least 11 months, at least 12 months, at least 1 year, at least 2 years, or more. In some embodiments, after treating according to the methods of the disclosure, an individual with pica stops eating non-nutritive items within about 1 hour, about 2 hours, about 20   3 hours, about 4 hours, about 5 hours, about 6 hours, about 7 hours, about 8 hours, about 9 hours, about 10 hours, about 11 hours, about 12 hours, about 13 hours, about 14 hours, about 15 hours, about 16 hours, about 17 hours, about 18 hours, about 19 hours, about 20 hours, about 21 hours, about 22 hours, about 23 hours, about 24 hours, about 1 day, about 2 days, about 3 days, about 4 days, about 5 days, about 6 days, or about 7 days. 25          In some embodiments, a method for treating anorexia nervosa (AN) in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. AN is a disorder characterized by intense fear of gaining weight, abnormally low body weight, and a distorted perception of weight. Individuals with AN often severely restrict the amount of food they eat. They may control calorie intake by vomiting 30 after eating or by misusing laxatives, diet aids, diuretics, or enemas. They may also try to lose weight by exercising excessively. In some embodiments, a subject with AN has signs and symptoms, including but not limited to, extreme weight loss or not making expected 2026204976   25 Jun 2026 developmental weight gains, thin appearance, abnormal blood counts, fatigue, insomnia, dizziness or fainting, bluish discoloration of the fingers, thin hair that breaks or falls out, soft downy hair covering the body, absence of menstruation, constipation and abdominal pain, dry or yellowish skin, intolerance of cold, irregular heart rhythms, low blood pressure, dehydration, swelling of arms or legs, or eroded teeth and calluses on the knuckles from induced vomiting. In some embodiments, after treating according to the methods of the disclosure, one or more symptoms of AN improve for at least 1 day, at least 2 days, at least 3 days, at least 4 days, at least 5 days, at least 6 days, at least 7 days, at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 5 weeks, at least 1 month, at least 2 months, at least 3 months, at least 4 months, at least 5 months, at least 6 months, at least 7 months, at least 8 months, at least 9 months, at least 10 months, at least 11 months, at least 12 months, at least 1 year, at least 2 years, or more. In some embodiments, after treating according to the methods of the disclosure, one or more symptoms of AN improve within about 1 hour, about 2 hours, about 3 hours, about 4 hours, about 5 hours, about 6 hours, about 7 hours, about 8 hours, about 9 hours, about 10 hours, about 11 hours, about 12 hours, about 13 hours, about 14 hours, about 15 hours, about 16 hours, about 17 hours, about 18 hours, about 19 hours, about20 hours, about21 hours, about22 hours, about 23 hours, about 24 hours, about 1 day, about 2 days, about 3 days, about 4 days, about 5 days, about 6 days, or about 7 days. In some embodiments, a method for treating bulimia nervosa (BN) in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. BN is a disorder characterized by distortion of body image and an obsessive desire to lose weight in which bouts of extreme overeating are followed by depression and self-induced vomiting, purging, use of laxatives, diuretics, or fasting. In some embodiments, the binge eating and inappropriate compensatory behaviors both occur on average at least once a week for three months. Signs and symptoms of BN include but are not limited to behaviors and attitudes that indicate that weight loss, dieting, and control of food are becoming primary concerns; evidence of binge eating, including disappearance of large amounts of food in short periods of time or lots of empty wrappers and containers indicating consumption of large amounts of food; evidence of purging behaviors, including frequent trips to the bathroom after meals, signs and / or smells of vomiting, presence of wrappers or packages of laxatives or diuretics; appears uncomfortable eating around others; develops food rituals (e.g. eats only a particular food or food group [e.g. condiments], excessive chewing, doesn’t allow foods to touch); 2026204976   25 Jun 2026 skips meals or takes small portions of food at regular meals; disappears after eating, often to the bathroom; any new practice with food or fad diets, including cutting out entire food groups (no sugar, no carbs, no dairy, vegetarianism / veganism); fear of eating in public or with others; steals or hoards food in strange places; drinks excessive amounts of water or non-caloric beverages; uses excessive amounts of mouthwash, mints, and gum; hides body with baggy clothes; maintains excessive, rigid exercise regimen - despite weather, fatigue, illness, or injury—due to the need to “burn off” calories; shows unusual swelling of the cheeks or jaw area; has calluses on the back of the hands and knuckles from self- induced vomiting; teeth are discolored, stained; creates lifestyle schedules or rituals to make time for binge-and-purge sessions; withdraws from usual friends and activities; looks bloated from fluid retention; frequently diets; shows extreme concern with body weight and shape; frequent checking in the mirror for perceived flaws in appearance; has secret recurring episodes of binge eating (eating in a discrete period of time an amount of food that is much larger than most individuals would eat under similar circumstances); feels lack of control over ability to stop eating; purges after a binge (e.g. self-induced vomiting, abuse of laxatives, diet pills and / or diuretics, excessive exercise, fasting); extreme mood swings; self-injury (cutting and other forms of self-harm without suicidal intention), substance abuse, impulsivity, diabulimia, noticeable fluctuations in weight, both up and down; body weight is typically within the normal weight range; may be overweight; stomach cramps, other non-specific gastrointestinal complaints (constipation, acid reflux, etc.); difficulties concentrating; abnormal laboratory findings (anemia, low thyroid and hormone levels, low potassium, low blood cell counts, slow heart rate); dizziness; fainting / syncope; feeling cold all the time; sleep problems; cuts and calluses across the top of finger joints (a result of inducing vomiting); dental problems, such as enamel erosion, cavities, and tooth sensitivity; dry skin; dry and brittle nails; swelling around area of salivary glands; fine hair on body; thinning of hair on head, dry and brittle hair (lanugo); cavities, or discoloration of teeth, from vomiting; muscle weakness; yellow skin (in context of eating large amounts of carrots); cold, mottled hands and feet or swelling of feet; menstrual irregularities — missing periods or only having a period while on hormonal contraceptives (this is not considered a “true” period); poor wound healing; or impaired immune functioning. In some embodiments, after treating according to the methods of the disclosure, one or more symptoms of BN improve for at least 1 day, at least 2 days, at least 3 days, at least 4 days, at least 5 days, at least 6 days, at least 7 days, at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 5 weeks, at least 1 month, at least 2 months, at least 3 months, at least 4 months, 2026204976   25 Jun 2026 at least 5 months, at least 6 months, at least 7 months, at least 8 months, at least 9 months, at least 10 months, at least 11 months, at least 12 months, at least 1 year, at least 2 years, or more. In some embodiments, after treating according to the methods of the disclosure, one or more symptoms of BN improve within about 1 hour, about 2 hours, about 3 hours, about 4 hours, 5 about 5 hours, about 6 hours, about 7 hours, about 8 hours, about 9 hours, about 10 hours, about 11 hours, about 12 hours, about 13 hours, about 14 hours, about 15 hours, about 16 hours, about 17 hours, about 18 hours, about 19 hours, about20 hours, about21 hours, about22 hours, about 23 hours, about 24 hours, about 1 day, about 2 days, about 3 days, about 4 days, about 5 days, about 6 days, or about 7 days. 10           In some embodiments, a method for treating binge-eating disorder (BED) in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. Binge-eating disorder (BED) is the most common eating disorder and is characterised by the uncontrolled consumption of large volumes of food over a short time-period, causing psychological distress. To meet diagnosis, these episodes must be 15 recurrent, occur on average at least once a week for three months, and involve three of the following: consuming food faster than normal; consuming food until uncomfortably full; consuming large amounts of food when not hungry; consuming food alone due to embarrassment; feeling disgusted, depressed, or guilty after eating a large amount of food. Compensatory behaviour associated with bulimia nervosa should not be involved, and binging should not occur during an 20 episode of bulimia nervosa or anorexia nervosa. Many factors have been associated with the cause of BED. High levels of depressive symptoms, body dissatisfaction, poor family cohesion, and low self-esteem are significant predictors of binge eating behaviours. The global pooled prevalence of BED is estimated as 0.9%. The prevalence is higher in 25 women (1.4%) than in men (0.4%). An online survey of 22,397 adults with BED in the US found that only 3.2% reported receiving support from a healthcare provider. The WHO mental health survey found lifetime prevalence estimates of BED to be 1.4% with median age of onset in the late teens to early 20’s. No ethnic differences have been found in the prevalence of eating disorders or differences in the relation of risk factors for future ED onset. 30 BED is more common in obese populations, as 20-50% of those seeking weight control treatment 2026204976   25 Jun 2026 report binge-eating episodes. However, only 1-2% of this population meet the full DSM criteria for BED. In some embodiments, treating according to the methods of the disclosure improves one or more symptom of BED. Symptoms of BED include eating unusually large amounts of food in a specific amount of time, feeling that eating behaviour is out of control, eating when full or not hungry, eating rapidly during binge episodes, eating until uncomfortably full, eating alone or in secret, feeling depressed, disgusted, ashamed, guilty, or upset about your eating, or frequently dieting, possibly without weight loss. In some embodiments, after treating according to the methods of the disclosure, one or more symptoms of BED improve for at least 1 day, at least 2 days, at least 3 days, at least 4 days, at least 5 days, at least 6 days, at least 7 days, at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 5 weeks, at least 1 month, at least 2 months, at least 3 months, at least 4 months, at least 5 months, at least 6 months, at least 7 months, at least 8 months, at least 9 months, at least 10 months, at least 11 months, at least 12 months, at least 1 year, at least 2 years, or more. In some embodiments, after treating according to the methods of the disclosure, one or more symptoms of BED improve within about 1 hour, about 2 hours, about 3 hours, about 4 hours, about 5 hours, about 6 hours, about 7 hours, about 8 hours, about 9 hours, about 10 hours, about 11 hours, about 12 hours, about 13 hours, about 14 hours, about 15 hours, about 16 hours, about 17 hours, about 18 hours, about 19 hours, about20 hours, about21 hours, about22 hours, about 23 hours, about 24 hours, about 1 day, about 2 days, about 3 days, about 4 days, about 5 days, about 6 days, or about 7 days. In some embodiments, a method for treating rumination disorder in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. Rumination disorder is an eating disorder in which an individual regurgitates food that has been swallowed. In some embodiments, a subject with rumination disorder swallows again the regurgitated food. In some embodiments, a subject with rumination disorder spits out the regurgitated food. In some embodiments, a subject with rumination disorder chews the regurgitated food. In some embodiments, a subject with rumination disorder chews and swallows the regurgitated food. In some embodiments, rumination disorder may cause unhealthy weight loss, malnutrition, dental erosion, bad breath, embarrassment, and / or social isolation. 2026204976   25 Jun 2026 In some embodiments, after treating according to the methods of the disclosure, the frequency of rumination decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, signs and symptoms of rumination disorder improve for at least 1 day, at least 2 days, at least 3 days, at least 4 days, at least 5 days, at least 6 days, at least 7 days, at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 5 weeks, at least 1 month, at least 2 months, at least 3 months, at least 4 months, at least 5 months, at least 6 months, at least 7 months, at least 8 months, at least 9 months, at least 10 months, at least 11 months, at least 12 months, at least 1 year, at least 2 years, or more. In some embodiments, after treating according to the methods of the disclosure, signs and symptoms of rumination disorder improve within about 1 hour, about 2 hours, about 3 hours, about 4 hours, about 5 hours, about 6 hours, about 7 hours, about 8 hours, about 9 hours, about 10 hours, about 11 hours, about 12 hours, about 13 hours, about 14 hours, about 15 hours, about 16 hours, about 17 hours, about 18 hours, about 19 hours, about 20 hours, about 21 hours, about 22 hours, about 23 hours, about 24 hours, about 1 day, about 2 days, about 3 days, about 4 days, about 5 days, about 6 days, or about 7 days. In some embodiments, a method for treating avoidant / restrictive food intake disorder (ARFID) in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. ARFID is an eating or feeding disturbance characterized by one or more of apparent lack of interest in eating or food; avoidance based on the sensory characteristics of the food; and concern about aversive consequences of eating). ARFID manifests as persistent failure to meet appropriate nutritional and / or energy needs, nutritional deficiency, dependence on enteral feeding or oral nutritional supplements, or marked interference with psychosocial functioning. In some embodiments, subjects with ARFID have ASD, ADH, or intellectual disabilities. In some embodiments, after treating according to the methods of the disclosure, one or more signs, symptoms, or consequences of ARFID improve. In some embodiments, the improvement is about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. 2026204976   25 Jun 2026 In some embodiments, the subject with an eating disorder has one or more comorbidities. Non-limiting examples of comorbidities include endocrine and / or metabolic diseases, gastrointestinal diseases, cardiovascular diseases, psychiatric disorders, ora neuroses. In some embodiments, the comorbidity is anxiety disorder, depressive disorder, psychotic disorder, developmental disorder, eating disorder, attention-deficit hyperactivity disorder (ADHD), attention deficit disorder (ADD), autism spectrum disorder (ASD), tic disorder, bipolar disorder, conduct disorder, mental retardation, or a combination thereof. In some embodiments, the comorbidity is a mood disorder, major depressive disorder, bipolar disorder, schizophrenia, an eating disorder, attention deficit / hyperactivity disorder, epilepsy, cardiovascular disease, migraine, irritable bowel syndrome, dementia, Alzheimer’s disease, Parkinson’s disease, or combinations thereof. In some embodiments, the comorbidity is depression, generalized anxiety, agoraphobia, or panic disorder. In some embodiments, the comorbidity is an anxiety disorder, a mood disorder, an impulse control disorder, a substance use disorder, or any disorder. In some embodiments, the comorbidity is hypertension, dyslipidemias, sleep problems / disorders, pain, functional gastrointestinal symptoms / disorders, menstrual dysfunction, pregnancy complications, intracranial hypertension, polycystic ovary syndrome, or combinations thereof. Table 7 depicts the lifetime comorbidity of eating disorders with other core disorders. Table 7 Lifetime Co-morbidity of Eatinc Data from National Comorbidit j Disorders with Other Core Disorders Among U.S. Adults y Survey - Replication (NCS-R) Anorexia Nervosa (%) Bulimia Nervosa (%) Binge-eating disorder (%) Any anxiety disorder 47.9 80.6 65.1 Any mood disorder 42.1 70.7 46.4 Any impulse control disorder 30.8 63.8 43.3 Any substance use disorder 27.0 36.8 23.3 Any disorder 56.2 94.5 78.9 In some embodiments, the comorbidity is another eating disorder. In some embodiments, the subject in need has at least two eating disorders. In some embodiments, the subject in need 2026204976   25 Jun 2026 has at least three eating disorders. In some embodiments, the subject in need has at least four eating disorders. In some embodiments, the comorbidity is a psychiatric disorder selected from schizophrenia, schizoaffective disorder, bipolar disorder, major depressive disorder, anxiety disorder, obsessive compulsive disorder, post-traumatic stress disorder, attention deficit hyperactivity disorder, autism, alcohol use disorder, drug use disorder, or suicide attempt. In some embodiments, the comorbidity is major depression. In some embodiments, the comorbidity is an eating disorder. In some embodiments, the comorbidity is obesity, one or more conditions related to obesity, or both. In some embodiments, the one or more conditions related to obesity are one or more of metabolic syndrome, diabetes, hypertension, dyslipidaemias, sleep problems or disorders, or pain. In some embodiments, the comorbidity is ADHD. In some embodiments, the comorbidity is ASD. In some embodiments, the comorbidity is major depressive disorder, bipolar disorder, irritable bowel disease, or irritable bowel syndrome. In some embodiments, the one or more comorbidities is reproductive dysfunction, polycystic ovary syndrome, or menstrual dysfunction. In some embodiments, the comorbidity is a psychiatric disorder selected from schizophrenia, schizoaffective disorder, bipolar disorder, major depressive disorder, anxiety disorder, obsessive compulsive disorder, post-traumatic stress disorder, attention deficit hyperactivity disorder, autism, alcohol use disorder, drug use disorder, or suicide attempt. In some embodiments, no other treatment is administered to the subject to treat eating disorder after administration of psilocybin. In some embodiments, the subject with anxiety disorder is administered at least one additional therapy and / or therapeutic. In some embodiments, administration of an additional therapy and / or therapeutic is prior to administration of psilocybin. In some embodiments, administration of an additional therapy and / or therapeutic is after administration of psilocybin. In some embodiments, administration of an additional therapy and / or therapeutic is concurrent with administration of psilocybin. In some embodiments, the additional therapy is an antidepressant, an anticonvulsant, lisdexamfetamine dimesylate, an antipsychotic, an anxiolytic, an anti-inflammatory drug, a 2026204976   25 Jun 2026 WO 2020 / 212951                                                 PCT / IB2020 / 053687 84 benzodiazepine, an analgesic drug, a cardiovascular drug, an opioid antagonist, or combinations thereof. In some embodiments, the additional therapy is a benzodiazepine. In some embodiments, the benzodiazepine is diazepam or alprazolam. In some embodiments, the additional therapy is a N-methyl-D-aspartate (NMDA) receptor antagonist. In some embodiments, the NMDA receptor antagonist is ketamine. In some embodiments, the additional therapy is an antidepressant. In some embodiments, an antidepressant indirectly affects a neurotransmitter receptor, e.g., via interactions affecting the reactivity of other molecules at a neurotransmitter receptor. In some embodiments, an antidepressant is an agonist. In one embodiment, an antidepressant is an antagonist. In some embodiments, an antidepressant acts (either directly or indirectly) at more than one type of neurotransmitter receptor. In some embodiments, an antidepressant is chosen from buproprion, citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, mirtazapine, paroxetine, reboxetine, sertraline, and venlafaxine. In some embodiments, the antidepressant is a tricyclic antidepressant ("TCA"), selective serotonin reuptake inhibitor ("SSRI"), serotonin and noradrenaline reuptake inhibitor ("SNRI"), dopamine reuptake inhibitor ("DRI"), noradrenaline reuptake Monoamine oxidase inhibitor (“MAOI”), including inhibitor (“NRU”), dopamine, serotonin and noradrenaline reuptake inhibitor (“DSNRI”), a reversible inhibitor of monoamine oxidase type A (RIMA), or combination thereof. In some embodiments, the antidepressant is a TCA. In some embodiments, the TCA is imipramine or clomipramine. In some embodiments, the anti-depressant is an SRI. In some embodiments, the SSRI is escitalopram, paroxetine, sertraline, fluvoxamine, fluoxetine, or combinations thereof. In some embodiments, the SNRI is venlafaxine. In some embodiments, the additional therapy is pregabalin. In some embodiments, the additional therapy is an anticonvulsant. In some embodiments, the anticonvulsant is gabapentin, carbamazepine, ethosuximide, lamotrigin, felbamate, topiramate, zonisamide, tiagabine, oxcarbazepine, levetiracetam, divalproex sodium, phenytoin, fos-phyenytoin. In some embodiments, the anticonvulsant is topiramate. In some embodiments, the additional therapy is an antipsychotic. In some embodiments, the antipsychotic is a phenothiazine, butryophenone, thioxanthene, clozapine, risperidone, 2026204976   25 Jun 2026 olanzapine, or sertindole, quetiapine, aripiprazole, zotepine, perospirone, a neurokinin-3 antagonist, such as osanetant and talnetant, rimonabant.or a combination thereof. In some embodiments, the additional therapy is an anti-inflammatory drug. In some embodiments, the anti-inflammatory drug is a nonsteroidal antiinflammatory drugs (NSAIDS), steroid, acetaminophen (cyclooxygenase-3 (COX-3) inhibitors), 5-lipoxygenase inhibitor, leukotriene receptor antagonist, leukotriene A4 hydrolase inhibitor, angiotensin converting enzyme antagonist, beta blocker, antihistaminic, histamine 2 receptor antagonist, phosphodiesterase-4 antagonist, cytokine antagonist, CD44 antagonist, antineoplastic agent, 3-hydroxy-3-methylglutaryl coenzyme A inhibitor (statins), estrogen, androgen, antiplatelet agent, antidepressant, Helicobacter pylori inhibitors , proton pump inhibitor, thiazolidinedione, dualaction compounds, or combination thereof. In some embodiments, the additional therapy is an anti-anxiolytic. In one embodiment, an anxiolytic is chosen from alprazolam, an alpha blocker, an antihistamine, a barbiturate, a beta blocker, bromazepam, a carbamate, chlordiazepoxide, clonazepam, clorazepate, diazepam, flurazepam, lorazepam, an opioid, oxazepam, temazepam, or triazolam. In some embodiments, the additional therapy is a opioid antagonist. Non-limiting examples of opioid antagonists include naloxone, naltrexone, nalmefene, nalorphine, nalrphine dinicotinate, levallrphan, samidorphan, nalodeine, alvimopan, methylnaltrexone, naloxegol, 6p-naltrexol, axelopran, bevenopran, methylsamidorphan, naldemedine, buprenorphine, decozine, butorphanol, levorphanol, nalbuphine, pentazocine, and phenazocine. In some embodiments, the additional therapy is a cardiovascular drug. Non-limiting examples of cardiovascular drugs include digoxin or (3(3, 5(3, 12(3) -3-((0-2,6-dideoxy-p-D-ribo-hexopyranosyl)-(1,4)-0-2,6-dideoxy-(3-D-ribo-hexopyranosyl)-(1,4)-0-2,6-dideoxy-(3-D-ribo-hexopyranosyl) oxy] 12,14-dihydroxy-card -20 (22)-Enolide, lisinopril, captopril, ramipril, trandolapril, benazepril, cilazapril, enalapril, moexipril, perindopril, quinapril, fludrocortisone, enalaprilate, quinapril, perindopril, apixaban, dabigatran, edoxaban, heparin, rivaroxaban, warfarin, aspirin, clopidogrel, dipyridamole, prasugrel, ticagrelor, azilsartan, candesartan, eprosartan, irbesartan, losartan, olmesartan, telmisartan, valsartanscaubitril, acebutolol, atenolol, betaxolol, bisoprolol, metoprolol, nadolol, propranolol, sotalol, amlodipine, diltiazem, felodipine, 2026204976   25 Jun 2026 nifedipine, nimodipine, nisolidipine, verapamil, statins, nicotinic acids, diuretics, vasodilators, and combinations thereof. In some embodiments, the subject with an eating disorder is administered at least one therapy. Non-limiting examples of therapies include transcranial magnetic stimulation, cognitive behavioral therapy, interpersonal psychotherapy, dialectical behaviour therapy, weight loss therapy, mindfulness techniques, acceptance and commitment therapy, and combinations thereof. In some embodiments, at least one sign or symptom of an eating disorder is improved following the administration of the psilocybin or active metabolite thereof. In some embodiments, a sign or symptom of an anxiety disorder is measured according to a diary assessment, an assessment by a clinician or caregiver, or a clinical scale. Non-limiting examples of clinical scales, diary assessments, and assessments by a clinician or caregiver include: the Mini International Neuropsychiatric Interview (MINI), the McLean Screening Instrument for Borderline Personality Disorder (MSI-BPD), the Eating Disorder Examination (EDE), the Eating Disorder Questionnaire (EDE-Q), the Eating Disorder Examination Questionnaire Short Form (EDE-QS), the Physical Appearance State and Trait Anxiety Scale - State and Trait version (PASTAS), Spielberger StateTrait Anxiety Inventory (STAI), Eating Disorder Readiness Ruler (ED-RR), Visual Analogue Rating Scales (VAS), the Montgomery-Asberg Depression Rating Scale (MADRS), Yale-Brown Cornell Eating Disorder Scale (YBC-EDS), Yale-Brown Cornell Eating Disorder Scale Self Report (YBC-EDS-SRQ), the Body Image State Scale (BISS), Clinical impairment assessment (CIA) questionnaire, the Eating Disorder Inventory (EDI) (e.g. version 3: EDI-3), the Five Dimension Altered States of Consciousness Questionnaire (5D-ASC), the Columbia-Suicide Severity Rating Scale (C-SSRS), the Life Changes Inventory (LCI), and combinations thereof. In some embodiments, the Mini International Neuropsychiatric Interview (MINI) (for example, version 7.0.2) is a diagnostic interview instrument for psychiatric disorders in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) and the International Classification of Diseases-10. In some embodiments, the McLean Screening Instrument for Borderline Personality Disorder (MSI-BPD) is utilized to diagnose borderline personality disorder (BPD). The MSI-BPD contains 10 items based on the DSM-5 BPD criteria; the first 8 items represent the first eight criteria in the DSM-5 for BPD diagnosis, while the last two questions assess the paranoia and 2026204976   25 Jun 2026 dissociation criteria for BPD. Scores for the MSI-BPD range from 0 to 10, with each item rated as “1” if present and “0” if absent. A score of 7 or higher indicates a likelihood for a subject to meet criteria for BPD. In some embodiments, after treating according to the methods of the disclosure, a subject’s MSI-BPD score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, one or more of the Eating Disorder Examination (EDE), the Eating Disorder Questionnaire (EDE-Q), or the Eating Disorder Examination Questionnaire Short Form (EDE-QS) are utilized to assess the range and severity of eating disorders. The EDE is a structured clinical interview (investigator rated), whereas the EDE-Q and EDE-QS are self-report questionnaires. The EDE is a standardized interview used to measure the severity of the characteristic psychopathology of eating disorders. In some embodiments, after treatment according to the methods of the disclosure, a subject’s EDE score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. The EDE-Q is a self-reported interview, which assesses a subject’s eating disorder severity over 28 days. In some embodiments, after treatment according to the methods of the disclosure, a subject’s EDE-Q score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. The EDE-QS is a self-reported interview of eating disorder severity, which assesses the severity of a subject’s eating disorder symptoms over seven days.. The EDE-QS assesses the frequency of different forms of problematic overeating behaviors, including binge eating (labeled objective bulimic episodes (OBEs) and different forms of inappropriate weight compensatory behaviors (e.g., purging methods). In some embodiments, after treatment according to the methods of the disclosure, a subject’s EDE-QS score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, 2026204976   25 Jun 2026 about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, the Physical Appearance State and Trait Anxiety Scale - State and Trait version (PASTAS) is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The PASTAS is a self-reported 16-item measure that assesses anxiety about physical appearance. Subjects rate how often they experience anxiety about sites of their body on a Likert scale from 0 to 4. A score of 0 is “never,” and a score of 4 is “almost always.” In some embodiments, PASTAS is used to evaluate anxiety that is associated with eating disorders. In some embodiments, after treatment according to the methods of the disclosure, a subject’s PASTAS score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, the Spielberger State-Trait Anxiety Inventory (STAI) is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The STAI is a widely used instrument that contains separate self-report scales for measuring “state” and “trait” anxiety. “State” anxiety is transient anxiety due to a stressful stimulus, whereas “trait” anxiety is the predisposition of a subject to react with anxiety to stressful situations, is the STAI is selfreported and contains40 items scored by a 4 point Likert scale with semantic guides taking approximately 10 minutes. The STAI contains 20 questions related to state anxiety and 20 questions related to trait anxiety. Each section is scored between 20 and 80. In some embodiments, the Eating Disorder Readiness Ruler (ED-RR) is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The ED-RR is a self-reported, two-part 18-item questionnaire that examines readiness to change in nine dimensions of eating disorder behavior (restriction, weight-shape over evaluation, binge eating, vomiting, laxative use, fasting, diuretic use, weight-gain phobia, exercise). The first part of the ED-RR the subjective readiness of a subject to change on a Likert scale from 1-10. The second part of the ED-RR measures whether the motivation to change is for others or the self. The second part of the ED-RR is scored on a scale from 0 % to 100 %, where a score closer to 0 % indicates that the motivation to change is for others, and a score closer to 100 % indicates that the motivation to change is for self. Higher readiness to change has shown a correlation with a decrease in eating disorder symptoms overtime. In some embodiments, after treating according 2026204976   25 Jun 2026 to the methods of the disclosure, a subject’s readiness to change improves by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, about 100 %, about 110 %, about 120 %, about 130 %, about 140 %, about 150 %,about 160 %,about 170 %,about 180 %,about 190 %, about 200 %, about 210 %, about 220 %,about 230 %,about 240 %,about 250 %,about 260 %,about 270 %,about 280 %,about 290 %, about 300 %, or more, compared to prior to said treatment. In some embodiments, a subject’s ED-RR score increases by about 1 point, about 2 points, about 3 points, about 4 points, about 5 points, about 6 points, about 7 points, about 8 points, about 9 points, or about 10 points after treating according to the methods of the disclosure. In some embodiments, the Visual Analogue Rating Scales (VAS) are utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The VAS is self-reported ratings of hunger, fullness and desire to eat. Subjects mark the degree of their experience in relation to the anchors along a 100 mm continuum. In some embodiments, after treating according to the methods of the disclosure a subject’s VAS score improves by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, about 100 %, about 110%, about 120 %, about 130 %, about 140 %, about 150 %, about 160 %,about 170 %,about 180 %,about 190 %,about 200 %,about 210 %,about 220 %,about 230 %, about 240 %, about 250 %, about 260 %,about 270 %, about 280 %,about 290 %,about 300 %, or more compared to prior to said treating. In some embodiments, the Montgomery-Asberg Depression Rating Scale (MADRS) is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The MADRS is a clinician rated scale that measures depression severity, which contains 10 items, each scored from 0 (normal) to 6 (severe), for a total possible score of 60. A higher score denote greater severity of depression. In some embodiments, after treating according to the methods of the disclosure, the subject’s MADRS score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 % , about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, the Yale-Brown Cornell Eating Disorder Scale (YBC-EDS) and / or Yale-Brown Cornell Eating Disorder Scale Self Report (YBC-EDS-SRQ) are utilized to assess the 2026204976   25 Jun 2026 severity and type of symptoms observed to be present in subjectwith eating disorders. The YBC-EDS is an interview administered by a physician, whereas the YBC-EDS-SRQ is a self-reported questionnaire. The YBC-EDS-SRQ assesses the current severity of a subject’s eating disorder and the worst severity of a subject’s eating disorder. In some embodiments, the Body Image State Scale (BISS) is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The BISS is a 6 item self-reported scale that measures a subject’s affective / evaluative body image states. The BISS is used to investigate the momentary affective experience of body image in response to a variety of hypothetical situations. The six items are: 1) dissatisfaction with physical appearance, 2) dissatisfaction with body size and shape, 3) dissatisfaction with weight, 4) feelings of physical unattractiveness, 5) current feeling about one’s look relative to how one usually feels, and 6) evaluation of one’s appearance relative to how the average person looks. Each item is evaluated on a 9-point bipolar Likert like scale. The scale can be administered in a natural context as well as in a range of positive or negative hypothetical situations. A higher BISS score indicates better body image. In some embodiments, after a subject is treated according to the methods of the disclosure, the subject’s BISS score increases by between about 5 % and about 300 %, for example, about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, about 100 %, about 110 %, about 120 %,about 130 %,about 140 %,about 145 %,about 150 %, about 160 %, about 170 %, about 180 %,about 190 %,about 200 %,about 210 %,about 220 %, about 230 %,about 240 %, about 250 %, about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %. In some embodiments, a subject’s body mass index is evaluated to determine the safety and efficacy of psilocybin for the treatment of eating disorders. In some embodiments, the Clinical impairment assessment (CIA) questionnaire is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The CIA is a self-reported 16-item scale of the level of social and psychological impairment caused by an eating disorder in the past 28 days. The subscales are in mood, self-perception, cognitive functioning, interpersonal functioning and work preference. The items are rated on a four point Likert scale. In some embodiments, a score of 16 or greater suggests that a subject has an eating disorder. In some embodiments, after treating according to the methods of the disclosure, a subject’s CIA score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, 2026204976   25 Jun 2026 about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, compared to prior to treatment. In some embodiments, the Eating Disorder Inventory (EDI), for example version 3 (EDI-3), is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The EDI-3 is a self-reported questionnaire ranked on a Likert scale from 0-4. The EDI-3 contains 12 subscales, three of which are specific to eating disorders (drive for thinness, bulimia, body dissatisfaction), and nine of which measure general psychological traits (low self-esteem, personal alienation, interpersonal security, interpersonal alienation, interceptive deficits, emotional dysregulation, perfectionism, asceticism, and maturity fear). In some embodiments, after treating according to the methods of the disclosure, a subject’s EDI-3 composite decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, compared to prior to treatment. In some embodiments, the Five Dimension Altered States of Consciousness Questionnaire (5D-ASC) is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The 5D-ASC measures the acute drug effects using five primary dimensions and respective subdimensions to assess alterations in mood, perception, and experience of self in relation to environment and thought disorder. The 5 dimensions include: oceanic boundlessness, anxious ego dissolution, visionary restructuralization, auditory alterations, and reduction of vigilance. In some embodiments, the Columbia-Suicide Severity Rating Scale (C-SSRS) is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. The C-SSRS is used to assess suicide potential or tendency as a study entry criteria and monitored throughout the study. In some embodiments, after treatment according to the methods of the disclosure, a subject’s C-SSRS score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, compared to prior to treatment. In some embodiments, a qualitative interview is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. 2026204976   25 Jun 2026 In some embodiments, electrocardiogram (ECG) is utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. In some embodiments, the ECG is a standard 12-lead ECG. In some embodiments, vital signs are utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. Non-limiting examples of vital signs include weight, blood pressure, respiratory rate, body temperature, and pulse rate. In some embodiments, clinical laboratory tests are utilized to evaluate the safety and efficacy of psilocybin for the treatment of eating disorders. In some embodiments, the clinical laboratory tests include liver function tests. In some embodiments, the clinical laboratory tests employ blood samples and / or urine samples. In some embodiments, blood is tested for levels of hemoglobin, hematocrit, red blood cell count, mean corpuscular haemoglobin, mean corpuscular volume, mean corpuscular haemoglobin concentration, white blood cell count (with differential), and platelets. In some embodiments, blood is tested for levels of albumin, alkaline phosphatase, alanine aminotransferase (ALT), amylase, aspartate aminotransferase (AST), bicarbonate, bilirubin (direct, indirect, and total), calcium, chloride, creatine kinase, creatinine, gammaglutamyltransferase, glucose, lactate dehydrogenase, lipase, magnesium, phosphate, potassium, protein-total, sodium, urea (blood urea nitrogen), and uric acid. In some embodiments, urine samples are tested for pregnancy, illicit drugs, blood, glucose, ketones, protein, pH, specific gravity, nitrite, leukocytes, bilirubin, and urobilinogen. In some embodiments, adverse events (AEs) are measured to determine the safety and efficacy of psilocybin for the treatment of eating disorder. In some embodiments, the adverse events are classified as mild, moderate, or serious. A mild AE does not interfere in a significant manner with the subject’s normal level of functioning. A moderate AE produces some impairment of functioning, but is not hazardous to the subject’s health. A severe AE produces significant impairment of functioning or incapacitation and is a definite hazard to the subject’s health. Nonlimiting examples of adverse events include euphoric mood, Euphoric mood, Dissociative disorder, Hallucination, Psychotic disorder, Cognitive disorder, Disturbance in attention, Mood alterations, impaired psychomotor skills, inappropriate affect, overdose, intentional product misuse. Serious adverse events include death, life-threatening events, insubject hospitalization or prolongation of existing hospitalization, Persistent or significant disability / incapacity, congenital anomaly / birth defect in the offspring of a subject who received psilocybin. An event is life threatening if the subject was at immediate risk of death from the event as it occurred; i.e., it does 2026204976   25 Jun 2026 not include a reaction that if it had occurred in a more serious form might have caused death. For example, drug-induced hepatitis that resolved without evidence of hepatic failure would not be considered life threatening even though drug-induced hepatitis can be fatal. Important medical events that may not result in death, be life-threatening, or require hospitalization, may be considered a serious adverse event when, based upon appropriate medical judgment, they may jeopardize the subject and may require medical or surgical intervention to prevent one of the outcomes listed in this definition. Such events include, but are not limited to: intensive treatment in an emergency room or at home for allergic bronchospasm, blood dyscrasias or convulsions that do not result in in subject hospitalization, and development of drug dependency or drug abuse. In some embodiments, treating according to the methods of the disclosure results in an improvement in an eating disorder compared to pre-treatment of about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, according to any one of the diary assessments, assessments by a clinical or caregiver, or clinical scales, described herein. In some embodiments, after treating according to the methods of the disclosure, the subject in need thereof has a decreased eating disorder examination short form (EDE-QS) score compared to prior to said treating. In some embodiments, after treating according to the methods of the disclosure, the subject in need thereof has a decreased Physical Appearance State and Trait Anxiety Scale (PASTAS) score compared to prior to said treating. In some embodiments, after treating according to the methods of the disclosure, the subject in need thereof has a higher willingness to change compared to prior to said treating as evaluated by the Eating Disorder Readiness Ruler (ED-RR). In some embodiments, after treating according to the methods of the disclosure, the subject in need thereof has a decreased Montgomery-Asberg Depression Rating Scale (MADRS) score compared to prior to said treating. In some embodiments, after treating according to the methods of the disclosure, the subject in need thereof has an increased Body Image State Scale (BISS) compared to prior to said treating. In some embodiments, after administration of the psilocybin or active metabolite thereof, a subject with an eating disorder has improved cognition, information processing, stress levels, immune system, or combinations thereof. 2026204976   25 Jun 2026 In some embodiments, after administration of psilocybin or active metabolite thereof, the eating disorder or at least one symptom thereof is alleviated for a period of at least about 5 minutes to at least about 1 year, for example, at least one symptom of anxiety is alleviated for a period of at least about 5 minutes, at least about 15 minutes, at least about 30 minutes, at least about 45 minutes, at least about 1 hour, at least about 2 hours, at least 3 hours, at least about 4 hours, at least about 5 hours, at least about 6 hours, at least about 7 hours, at least about 8 hours, at least about 9 hours, at least about 10 hours, at least about 11 hours, at least about 12 hours, at least about 13 hours, at least about 14 hours, at least about 15 hours, at least about 16 hours, at least about 17 hours, at least about 18 hours, at least about 19 hours, at least about 20 hours, at least about 21 hours, at least about 22 hours, at least about 23 hours, at least about 24 hours, at least about 2 days, at least about 3 days, at least about 4 days, at least about 5 days, at least about 6 days, at least about 1 week, at least about 2 weeks, at least about 3 weeks, at least about 4 weeks, at least about 5 weeks, at least about 6 weeks, at least about 7 weeks, at least about 8 weeks, at least about 9 weeks, at least about 10 weeks, at least about 11 weeks, at least about 12 weeks, at least about 13 weeks, at least about 14 weeks, at least about 2 months, at least about 3 months, at least about 4 months, at least about 5 months, at least about 6 months, at least about 7 months, at least about 8 months, at least about 9 months, at least about 10 months, at least about 11 months, at least about 12 months, or more. In some embodiments, the eating disorder or at least one symptom thereof is alleviated for a period of at least 1 month after administration of psilocybin. In some embodiments the eating disorder or at least one symptom thereof is alleviated for a period of at least 3 months after administration of psilocybin. In some embodiments, the eating disorder or at least one symptom thereof is alleviated for a period of at least 1 year after administration of psilocybin. In some embodiments, after administration of psilocybin or active metabolite thereof, the eating disorder or at least one symptom thereof is alleviated within about 5 minutes to about 1 week, for example, about 5 minutes, about 15 minutes, about 30 minutes, about 45 minutes, about 1 hour, about 2 hours, at least 3 hours, about 4 hours, about 5 hours, about 6 hours, about 7 hours, about 8 hours, about 9 hours, about 10 hours, about 11 hours, about 12 hours, about 13 hours, about 14 hours, about 15 hours, about 16 hours, about 17 hours, about 18 hours, about 19 hours, about 20 hours, about 21 hours, about 22 hours, about 23 hours, about 24 hours, about 1 day, about 2 days, about 3 days, about 4 days, about 5 days, about 6 days, or about 7 days. In some embodiments, the eating disorder or at least one symptom thereof is alleviated within 24 2026204976   25 Jun 2026 hours of administration of the psilocybin. In some embodiments, the eating disorder or at least one symptom thereof is alleviated within 1 week of administration of the psilocybin. Headache Disorders In some embodiments, a method for treating one or more headache disorders in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. In some embodiments, the active metabolite is psilocin. As used herein, the term “headache disorder” refers to a disorder characterized by recurrent headaches. Headache disorders are among the most common disorders of the nervous system. Headache disorders include migraine, tension-type headache, cluster headache, and chronic daily headache syndrome. In some embodiments, a method for treating cluster headaches in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. In some embodiments, at least one sign or symptom of cluster headache is improved following administration of psilocybin or a metabolite thereof. In some embodiments, the sign or symptom of cluster headache is measured according to a diary assessment, a physical or psychological assessment by clinician, an imaging test, or a neurological examination. Cluster headache is a primary headache disorder and belongs to the trigeminal autonomic cephalalgias. The definition of cluster headaches is a unilateral headache with at least one autonomic symptom ipsilateral to the headache. Attacks are characterized by severe unilateral pain predominantly in the first division of the trigeminal nerve- the fifth cranial nerve whose primary function is to provide sensory and motor innervation to the face. Attacks are also associated with prominent unilateral cranial autonomic symptoms and subjects often experience agitation and restlessness during attacks. In some embodiments, a subject with cluster headaches has cluster headache attacks that last from 15 to 180 minutes and occur up to eight times a day. They usually occur at approximately the same time each day and often occur at night. In some embodiments, the cluster headaches are episodic. Episodic cluster headaches (ECH) are experienced by 85-90% of subjects and are when subjects experience daily attacks for weeks to months and then have 2026204976   25 Jun 2026 remission for months to years. Subjects often have one to two episodes a year and these are often in spring or autumn. In some embodiments, the cluster headaches are chronic cluster headaches (CCH). An individual that has CCH experiences attacks lasting more than a year without remission, or remission that lasts less than a month. CCH is experienced by 15-20% of subjects that experience cluster headaches. Approximately 0.1% of the population suffer from cluster headaches. The disorder has historically been considered to have a male preponderance with a high male-to-female ratio, which differs between ECH and CCH. This ratio is highest in subjects where the age of onset is between 20 to 49 years old; 7.2:1 in ECH and 11.0:1 in CCH. The ratio is lowest when the age of onset is after 50; 2.3:1 in ECH and 0.6:1 in CCH. These ratios were determined by observations of 554 cluster headache patients examined between 1963 and 1997. The authors suggested that these ratios could be related to sex hormone regulation and environmental factors. Recent studies have reported a decreasing male predominance with a ratio of 2:1. In some embodiments, a subject with cluster headaches also experiences nausea and / or vomiting. In some embodiments, a subject with cluster headaches experiences unilateral pain, excessive tearing, facial flushing, a droopy eyelid, a constricted pupil, eye redness, swelling under or around one or both eyes, sensitivity to light, nausea, agitation, and restlessness. In some embodiments, after treating according to the methods of the disclosure, the frequency of cluster headaches decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, compared to prior to said treating. In some embodiments, after treating according to the methods of the disclosure, the length of a cluster headache attack decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, compared to prior to said treating. In some embodiments, after treating according to the methods of the disclosure a sign or symptom of cluster headache decreases compared to prior to said treatment. In some embodiments, the sign or symptom of migraine is measured according to a diary assessment, a 2026204976   25 Jun 2026 physical or psychological assessment by clinician, an imaging test, an electroencephalogram, a blood test, a neurological examination, or combination thereof. In some embodiments, the blood test evaluates blood chemistry and / or vitamins. In some embodiments, a method for treating migraines in a subject in need thereof 5 comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. A migraine is a moderate to severe headache that affects one half or both sides of the head, is pulsating in nature, and last from 2 to 72 hours. Symptoms of migraine include headache, nausea, sensitivity to light, sensitivity to sound, sensitivity to smell, dizziness, difficulty speaking, vertigo, vomiting, seizure, distorted vision, fatigue, or loss of 10 appetite. Some subjects also experience a prodromal phase, occurring hours or days before the headache, and / or a postdromal phase following headache resolution. Prodromal and postdromal symptoms include hyperactivity, hypoactivity, depression, cravings for particular foods, repetitive yawning, fatigue and neck stiffness and / or pain. In some embodiments, the migraine is a migraine without aura, a migraine with aura, a 15 chronic migraine, an abdominal migraine, a basilar migraine, a menstrual migraine, an ophthalmoplegic migraine, an ocular migraine, an ophthalmic migraine, or a hemiplegic migraine. In some embodiments, the migraine is a migraine without aura. A migraine without aura involves a migraine headache that is not accompanied by a headache. In some embodiments, the migraine is a migraine with aura. A migraine with aura is primarily characterized by the transient focal 20 neurological symptoms that usually precede or sometimes accompany the headache. Less commonly, an aura can occur without a headache, or with a non-migraine headache. In some embodiments, the migraine is a hemiplegic migraine. A hemiplegic migraine is a migraine with aura and accompanying motor weakness. In some embodiments, the hemiplegic migraine is a familial hemiplegic migraine or a sporadic hemiplegic migraine. In some embodiments, the 25 migraine is a basilar migraine. A subject with a basilar migraine has a migraine headache and an aura accompanied by difficulty speaking, world spinning, ringing in ears, or a number of other brainstem-related symptoms, not including motor weakness. In some embodiments, the migraine is a menstrual migraine. A menstrual migraine occurs just before and during menstruation. In some embodiments, the subject has an abdominal migraine. Abdominal migraines are often 30 experienced by children. Abdominal migraines are not headaches, but instead stomach aches. In some embodiments, a subject with abdominal migraines develops migraine headaches. In some embodiments, the subject has an ophthalmic migraine also called an “ocular migraine”. Subjects with ocular migraines experience vision or blindness in one eye for a short time with or after a 2026204976   25 Jun 2026 migraine headache. In some embodiments, a subject has an ophthalmoplegic migraine. Ophthalmoplegic migraines are recurrent attacks of migraine headaches associated with paresis of one or more ocular cranial nerves. In some embodiments, the subject in need experiences chronic migraines. As defined herein, a subject with chronic migraines has more than fifteen headache days per month. In some embodiments, the subject in need experiences episodic migraines. As defined herein, a subject with chronic migraines has less than fifteen headache days per month. In some embodiments, after treating according to the methods of the disclosure, the frequency of migraine decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, compared to prior to said treating. In some embodiments, after treating according to the methods of the disclosure, the length of a migraine headache decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, compared to prior to said treating. In some embodiments, after treating according to the methods of the disclosure a sign or symptom of migraine decreases compared to prior to said treatment. In some embodiments, the sign or symptom of migraine is measured according to a diary assessment, a physical or psychological assessment by clinician, an imaging test, or a neurological examination. In some embodiments, a method for treating chronic daily headache syndrome (CDHS) in a subject in need thereof comprising administering to the subject an effective amount of psilocybin or an active metabolite thereof is disclosed herein. A subject with CDHS has a headache for more than four hours on more than 15 days per month. Some subjects experience these headaches for a period of six months or longer. CHDS affects 4 % of the general population. Chronic migraine, chronic tension-type headaches, new daily persistant headache, and medication overuse headaches account for the vast majority of chronic daily headaches. In some embodiments, after treating according to the methods of the disclosure, a chronic daily headache experienced by the subject in need is reduced by about 5 %, about 10 %, about 2026204976   25 Jun 2026 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, after treating according to the methods of the disclosure, the number of chronic daily headaches experienced by the subject in need per month is reduced by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, after treating according to the methods of the disclosure, the number of chronic daily headaches experienced by the subject in need per month is reduced by about 1 headache per month, about 2 headaches per month, about 3 headaches per month, about 4 headaches per month, about 5 headaches per month, about 6 headaches per month, about 7 headaches per month, about 8 headaches per month, about 9 headaches per month, about 10 headaches per month, about 11 headaches per month, about 12 headaches per month, about 13 headaches per momnth, about 14 headaches per month, about 15 headaches per month, or more. In some embodiments, the subject with a headache disorder has one or more comorbidities. Non-limiting examples of comorbidities include endocrine and / or metabolic diseases, gastrointestinal diseases, cardiovascular diseases, psychiatric disorders, or a neuroses. In some embodiments, the comorbidity is anxiety disorder, depressive disorder, psychotic disorder, developmental disorder, eating disorder, attention-deficit hyperactivity disorder (ADHD), attention deficit disorder (ADD), autism spectrum disorder (ASD), tic disorder, bipolar disorder, conduct disorder, mental retardation, or a combination thereof. In some embodiments, the comorbidity is a mood disorder, major depressive disorder, bipolar disorder, schizophrenia, an eating disorder, attention deficit / hyperactivity disorder, epilepsy, cardiovascular disease, migraine, irritable bowel syndrome, dementia, Alzheimer’s disease, Parkinson’s disease, or combinations thereof. In some embodiments, the comorbidity is depression, generalized anxiety, agoraphobia, or panic disorder. In some embodiments, the comorbidity is major depression. In some embodiments, the comorbidity is an eating disorder. In some embodiments, the comorbidity is ADHD. In some embodiments, the comorbidity is ASD. In some embodiments, 2026204976   25 Jun 2026 the comorbidity is major depressive disorder, bipolar disorder, irritable bowel disease, or irritable bowel syndrome. In some embodiments, the comorbidity is sleep apnea, depression, anxiety, aggressive behavior, suicidal ideation, or bipolar disorder. In some embodiments, the comorbidity is tobacco use, sleep apnea, depression, anxiety, aggressive behavior, suicidal ideation, or bipolar disorder. In some embodiments, the comorbidity is stroke, vascular brain lesions, coronary heart disease, patent foramen ovale, hypertension, depression, anxiety, bipolar disorder, panic disorder, suicide, restless leg syndrome, epilepsy, inflammatory bowel disease, or asthma. In some embodiments, the subject in need thereof is a male. In some embodiments, the subject in need thereof is a female. In some embodiments, the subject in need thereof is a pregnant woman. In some embodiments, the subject in need thereof is a post-partum woman. In some embodiments, the subject in need thereof is psilocybin-naive. In some embodiments, the subject in need thereof has prior psilocybin experience. In some embodiments, no other treatment is administered to the subject to treat headache disorder after administration of psilocybin. In some embodiments, the subject with headache disorder is administered at least one additional therapy and / or therapeutic. In some embodiments, administration of an additional therapy and / or therapeutic is prior to administration of psilocybin. In some embodiments, administration of an additional therapy and / or therapeutic is after administration of psilocybin. In some embodiments, administration of an additional therapy and / or therapeutic is concurrent with administration of psilocybin. In some embodiments, the additional therapy is oxygen therapy, triptans, ergotamine, lidocaine, somatostatin and somatostatin analogues, corticosteroids, methysergide, verapamil, lithium, topiramate, valproic acid, botulinum toxin, clomiphene, lysergic acid diethylamide, prednisolone, dihydroergotamine, a beta blocker, a vitamin, an antidepressant, an anticonvulsant, lisdexamfetamine dimesylate, an antipsychotic, an anxiolytic, an anti-inflammatory drug, a benzodiazepine, an analgesic drug, a cardiovascular drug, or combinations thereof. In some embodiments, the additional therapy is an antidepressant. In some embodiments, the antidepressant is amitriptyline. In some embodiments, an antidepressant indirectly affects a neurotransmitter receptor, e.g., via interactions affecting the reactivity of other molecules at a 2026204976   25 Jun 2026 neurotransmitter receptor. In some embodiments, an antidepressant is an agonist. In one embodiment, an antidepressant is an antagonist. In some embodiments, an antidepressant acts (either directly or indirectly) at more than one type of neurotransmitter receptor. In some embodiments, an antidepressant is chosen from buproprion, citalopram, duloxetine, escitalopram, fluoxetine, fluvoxamine, milnacipran, mirtazapine, paroxetine, reboxetine, sertraline, and venlafaxine. In some embodiments, the antidepressant is a tricyclic antidepressant ("TCA"), selective serotonin reuptake inhibitor ("SSRI"), serotonin and noradrenaline reuptake inhibitor ("SNRI"), dopamine reuptake inhibitor ("DRI"), noradrenaline reuptake monoamine oxidase inhibitor (“MAOI”), including inhibitor (“NRU”), dopamine, serotonin and noradrenaline reuptake inhibitor (“DSNRI”), a reversible inhibitor of monoamine oxidase type A (RIMA), or combination thereof. In some embodiments, the antidepressant is a TCA. In some embodiments, the TCA is imipramine or clomipramine. In some embodiments, the anti-depressant is an SRI. In some embodiments, the SSRI is escitalopram, paroxetine, sertraline, fluvoxamine, fluoxetine, or combinations thereof. In some embodiments, the SNRI is venlafaxine. In some embodiments, the additional therapy is pregabalin. In some embodiments, the antidepressant is amitriptyline. In some embodiments, the additional therapeutic is an anticonvulsant. In some embodiments, the anticonvulsant is gabapentin, carbamazepine, ethosuximide, lamotrigine, felbamate, topiramate, zonisamide, tiagabine, oxcarbazepine, levetiracetam, divalproex sodium, phenytoin, fos-phenytoin. In some embodiments, the anticonvulsant is topiramate. In some embodiments, the additional therapeutic is a beta blocker. Non-limiting examples of beta blockers include acebutolol, atenolol, betaxolol, bisoprolol, carteolol, carvedilol, labetalol, metoprolol, nadolol, nebivolol, penbutolol, pindolol, propranolol, sotalol, or timolol. In some embodiments, the beta blocker is propranolol. In some embodiments, the additional therapeutic is a non-steroidal anti-inflammatory drug, acetaminophen, caffeine, a triptan, a dihydroergotamine, an opioid, an anti-nausea drug, a blood pressure-lowering medication, an anti-depressant, an anti-seizure drug, a botox injection, a monoclonal antibody directed to calcitonin gene-related peptide, acupuncture, black room, 2026204976   25 Jun 2026 change of diet, hot / cold therapy, magnesium intake, massages, riboflavin / B2 intake, transcranial magnetic stimulation, or any combination thereof. In some embodiments, at least one sign or symptom of headache disorder is improved following administration of psilocybin or a metabolite thereof. In some embodiments, a sign or symptom of a headache disorder is measured according to a diary assessment, an assessment by a clinician or caregiver, or a clinical scale. In some embodiments, psilocybin treatment causes a demonstrated improvement in one or more of the following: the Visual Analog Scale, Numeric Rating Scale, the Short Form Health Survey, Profile of Mood States, the Pittsburgh Sleep Quality Index, the Major Depression Inventory, the Perceived Stress Scale, the 5-Level EuroQoL-5D, the Headache Impact Test; the ID-migraine; the 3-item screener; the Minnesota Multiphasic Personality Inventory; the Hospital Anxiety and Depression Scale (HADS), the 50 Beck Depression Inventory (BDI; both the original BDI51 and the second edition, BDI-II52), the 9-item Patient Health Questionnaire (PHQ-9), the Migraine Disability Assessment Questionnaire (MIDAS), the Migraine-Specific Quality of Life Questionnaire version 2.1 (MSQ v2.1), the European Quality of Life-5 Dimensions (EQ-5D), the Short-form 36 (SF-36), or a combination thereof. In some embodiments, treating according to the methods of the disclosure results in an improvement in a headache disorder compared to pre-treatment of about 10%, about 15%, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, according to any one of the diary assessments, assessments by a clinical or caregiver, or clinical scales, described herein. In some embodiments, treating according to the methods of the disclosure results in an improvement in migraine compared to pre-treatment of about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, according to any one of the diary assessments, assessments by a clinical or caregiver, or clinical scales, described herein. In some embodiments, the assessment is the Visual Aura Rating Scale or the ID Migraine questionnaire. In some embodiments, treating according to the methods of the disclosure results in an improvement in cluster headaches compared to pre-treatment of about 10%, about 15%, about 2026204976   25 Jun 2026 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, according to any one of the diary assessments, assessments by a clinical or caregiver, or clinical scales, described herein. In some embodiments, the assessment is the Visual Analog Scale, the Numeric Rating Scale, the Short Form Health Survey, the Profile of Mood States, the Pittsburgh Sleep Quality Index, the Major Depression Inventory, the Perceived Stress Scale, the 5-Level EuroQoL-5D, the Headache Impact Test, or combinations thereof. In some embodiments, after administration of psilocybin or active metabolite thereof, at least one symptom of headache disorder is alleviated for a period of at least about 5 minutes to at least about 1 year, for example, at least one symptom of anxiety is alleviated for a period of at least about 5 minutes, at least about 15 minutes, at least about 30 minutes, at least about 45 minutes, at least about 1 hour, at least about 2 hours, at least 3 hours, at least about 4 hours, at least about 5 hours, at least about 6 hours, at least about 7 hours, at least about 8 hours, at least about 9 hours, at least about 10 hours, at least about 11 hours, at least about 12 hours, at least about 13 hours, at least about 14 hours, at least about 15 hours, at least about 16 hours, at least about 17 hours, at least about 18 hours, at least about 19 hours, at least about 20 hours, at least about 21 hours, at least about 22 hours, at least about 23 hours, at least about 24 hours, at least about 2 days, at least about 3 days, at least about 4 days, at least about 5 days, at least about 6 days, at least about 1 week, at least about 2 weeks, at least about 3 weeks, at least about 4 weeks, at least about 5 weeks, at least about 6 weeks, at least about 7 weeks, at least about 8 weeks, at least about 9 weeks, at least about 10 weeks, at least about 11 weeks, at least about 12 weeks, at least about 13 weeks, at least about 14 weeks, at least about 2 months, at least about 3 months, at least about 4 months, at least about 5 months, at least about 6 months, at least about 7 months, at least about 8 months, at least about 9 months, at least about 10 months, at least about 11 months, at least about 12 months, or more. In some embodiments, at least one symptom of headache disorder is alleviated for a period of at least 1 month after administration of psilocybin. In some embodiments, at least one symptom of headache disorder is alleviated for a period of at least 3 months after administration of psilocybin. In some embodiments, at least one symptom of headache disorder is alleviated for a period of at least 1 year after administration of psilocybin. In some embodiments, the administration of psilocybin prevents the occurrence of the headache disorder for at least about 1 week or more, for example, about 1 week, about 2 weeks, about 3 weeks, about 4 weeks, about 5 weeks, about 1 month,about 6 weeks, about 2 months, 2026204976   25 Jun 2026 about 3 months, about 4 months, about 5 months, about 6 months, about 7 months, about 8 months, about 9 months, about 10 months, about 11 months, about 1 year, or more. In some embodiments, the administration of psilocybin prevents the occurrence of the headache disorder for at least about 1 month. In some embodiments, the administration of psilocybin prevents the occurrence of the headache disorder for at least about 3 months. In some embodiments, the administration of psilocybin prevents the occurrence of the headache disorder for at least about 6 months. In some embodiments, the administration of psilocybin prevents the occurrence of the headache disorder for at least about 12 months. In some embodiments, after administration of psilocybin or active metabolite thereof, at least one symptom of headache disorder is alleviated within about 5 minutes to about 1 week, for example, about 5 minutes, about 15 minutes, about 30 minutes, about 45 minutes, about 1 hour, about 2 hours, at least 3 hours, about 4 hours, about 5 hours, about 6 hours, about 7 hours, about 8 hours, about 9 hours, about 10 hours, about 11 hours, about 12 hours, about 13 hours, about 14 hours, about 15 hours, about 16 hours, about 17 hours, about 18 hours, about 19 hours, about 20 hours, about 21 hours, about 22 hours, about 23 hours, about 24 hours, about 1 day, about 2 days, about 3 days, about 4 days, about 5 days, about 6 days, or about 7 days. In some embodiments, at least one symptom of headache disorder is alleviated or improved within 15 minutes of administration of the psilocybin. In some embodiments, at least one symptom of headache disorder is alleviated or improved within 30 minutes of administration of the psilocybin. In some embodiments, at least one symptom of headache disorder is alleviated or improved within 1 hour of administration of the psilocybin. In some embodiments, at least one symptom of headache disorder is alleviated or improved within 3 hours of administration of the psilocybin. In some embodiments, at least one symptom of headache disorder is alleviated or improved within 6 hours of administration of the psilocybin. Pre-treatments and combination therapies In some embodiments, the methods of treatment comprising administering psilocybin to a subject in need thereof further comprise pretreating the subject with magnesium before administration of the psilocybin. Sometimes, magnesium is administered daily for a least 1 day, at least 2 days, at least 3 days, at least 4 days, at least 5 days, at least 6 days, at least 1 week, at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 5 weeks, or at least 6 weeks before administration of the psilocybin. In some embodiments, about 10 mg to about 500 mg of magnesium are administered to the subject per day. In some embodiments, about 30 mg, about 2026204976   25 Jun 2026 75 mg, about 80 mg, about 130 mg, about 240 mg, about 310 mg, about 320 mg, about 360 mg, about 410 mg, about 400 mg, or about 420 mg are administered to the subject per day. In some embodiments the magnesium is administered to the subject on the same day as the psilocybin. In some embodiments, the magnesium is administered to the subject immediately before, concurrently with, or immediately after administration of the psilocybin. In some embodiments, magnesium supplements are administered to the subject until the subject’s blood level for magnesium is about 1.5 to about 2.5 mEq / L. In some embodiments, psilocybin is not administered to the subject if the subject’s blood level of magnesium is less than about 1.5 to about 2.5 mEq / L. In some embodiments, the methods of treatment comprising administering psilocybin to a subject in need thereof further comprise pretreating the subject with niacin before administration of the psilocybin. Sometimes, niacin is administered daily for a least 1 day, at least 2 days, at least 3 days, at least 4 days, at least 5 days, at least 6 days, at least 1 week, at least 2 weeks, at least 3 weeks, at least 4 weeks, at least 5 weeks, or at least 6 weeks before administration of the psilocybin. In some embodiments, about 1 mg to about 5,000 mg of niacin are administered to the subject per day, for example about 1 mg to about 50 mg, about 10 mg to about 100 mg, about 100 mg to about 200 mg, about 1 mg to about 200 mg, about 100 mg to about 200 mg, about 10 mg to about 50 mg, about 10 to about 35 mg, about 100 mg to about 500 mg, or about 1,000 mg to about 3,000 mg. In some embodiments, about 10 mg, about 14 mg, about 15 mg, about 16 mg, about 20 mg, about 30 mg, about 35 mg, about 50 mg, about 60 mg, about 75 mg, about 100 mg, about 200mg, about 250 mg, about 300 mg, about 350 mg, about 400 mg, about 450 mg, about 500 mg, about 550 mg, about 600 mg, about 650 mg, about 700 mg, about 750 mg, about 800 mg, about 850 mg, about 900 mg, about950 mg, about 1000 mg, about 1500 mg, about2000 mg, about 2500 mg, or about 3000 mg of niacin are administered to the subject per day (while avoiding any toxic exposure from excess niacin). In some embodiments, niacin is included as an ingredient I component, for example, to reduce risk of abuse and / or to improve efficacy. In some embodiments the niacin is administered to the subject on the same day as the psilocybin. In some embodiments, the niacin is administered to the subject immediately before, concurrently with, or immediately after administration of the psilocybin. In some embodiments, psilocybin is administered to the subject in combination with one or more additional therapies. In some embodiments, psilocybin is administered to the subject in combination with one or more anti-depressant or anti-anxiety drugs, such as SSRIs, tricyclic 2026204976   25 Jun 2026 antidepressants (TCAs), monoamine oxidase inhibitors (MAOIs), or serotonin norepinephrine reuptake inhibitors (SNRIs). In some embodiments, the disclosure provides a method of reducing anxiety in a subject undergoing treatment with psilocybin, the method comprising administering to the subject: i) psilocybin or a precursor or derivative thereof, and ii) one or more benzodiazepines. In some embodiments, the one or more benzodiazepines are administered to the subject at or around the same time as the psilocybin or precursor or derivative thereof. In some embodiments, the one or more benzodiazepines are administered to the subject prior to administration of the psilocybin or precursor or derivative thereof, such as about 10 minutes, about 15 minutes, about 20 minutes, about 30 minutes, about 45 minutes, about 60 minutes, about 75 minutes, about 90 minutes, about 105 minutes, about 120 minutes, about 150 minutes, or about 180 minutes before administration of the psilocybin or precursor or derivative thereof. In some embodiments, the one or more benzodiazepines are administered to the subject after the psilocybin or precursor or derivative thereof, such as about 10 minutes, about 15 minutes, about 20 minutes, about 30 minutes, about 45 minutes, about 60 minutes, about 75 minutes, about 90 minutes, about 105 minutes, about 120 minutes, about 150 minutes, or about 180 minutes after administration of the psilocybin or precursor or derivative thereof. In some embodiments, the one or more benzodiazepines are administered at a dose that is lower than doses typically used to treat anxiety, such as about 10%, 20%, 25%, 30%, 40%, 50%, or 75% of a typical dose. In some embodiments, the one or more benzodiazepines are administered at a dose that is approximately equivalent to doses typically used to treat anxiety. In some embodiments, the one or more benzodiazepines are administered at a dose that is higher than doses typically used to treat anxiety, such as about 125%, 150%, 175%, 200%, 250%, or 300% of a typical dose. In some embodiments, the one or more benzodiazepine is administered orally to the subject. In some embodiments, the benzodiazepine is selected from adinazolam, alprazolam, bentazepam, bretazenil, bromazepam, bromazolam, brotizolam, camazepam, chlordiazepoxide, cinazepam, cinolazepam, clobazam, clonazepam, clonazolam, clorazepate, clotiazepam, cloxazolam, delorazepam, deschloroetizolam, diazepam, diclazepam, estazolam, ethyl carfluzepate, ethyl loflazepate, etizolam, flualprazolam, flubromazepam, flubromazolam, fluclotizolam, flunitrazepam, flunitrazolam, flurazepam, flutazolam, flutoprazepam, halazepam, 2026204976   25 Jun 2026 ketazolam, loprazolam, lorazepam, lormetazepam, meclonazepam, medazepam, metizolam, mexazolam, midazolam, nifoxipam, nimetazepam, nitemazepam, nitrazepam, nitrazolam, nordiazepam, norflurazepam, oxazepam, phenazepam, pinazepam, prazepam, premazepam, pyrazolam, quazepam, rilmazafone, temazepam, tetrazepam, or triazolam. In certain embodiments, a patient is administered psilocybin or a precursor or derivative thereof as described herein along with one or more 5-HT2a specific antagonists and / or inverse agonists. In some embodiments, the subject is administered psilocybin or a precursor or derivative thereof and the one or more 5-HT2a specific antagonists and / or inverse agonists at the same time. In other embodiments, the subject is administered one or more 5-HT2A specific antagonists and / or inverse agonists prior to psilocybin administration, such as, but not limited to about 10 minutes, about 15 minutes, about 20 minutes, about 30 minutes, about 45 minutes, about 60 minutes, about 75 minutes, about 90 minutes, about 105 minutes, about 120 minutes, about 150 minutes, or about 180 minutes before psilocybin administration. In some embodiments, the subject is administered one or more 5-HT2A specific antagonists and / or inverse agonists after psilocybin administration, such as, but not limited to about 10 minutes, about 15 minutes, about 20 minutes, about 30 minutes, about 45 minutes, about 60 minutes, about 75 minutes, about 90 minutes, about 105 minutes, about 120 minutes, about 150 minutes, or about 180 minutes after psilocybin administration. In certain embodiments, the one or more 5-HT2A specific antagonists and / or inverse agonists are administered at doses that are lower than doses typically used, e.g., about 10%, about 20%, about 25%, about 30%, about 40%, about 50%, or about 75% of a typical dose. In other embodiments, the one or more 5-HT2A specific antagonists and / or inverse agonists are administered at doses that are equivalent to doses typically used. In yet other embodiments, the one or more 5-HT2A specific antagonists and / or inverse agonists are administered at doses that are higher than doses typically used, e.g., about 125%, about 150%, about 175%, about 200%, about 250%, or about 300% of a typical dose. Suitable 5-HT2A antagonists include but are not limited to, trazodone, mirtazapine, metergoline, ketanserin, ritanserin, nefazodone, clozapine, olanzapine, quetiapine, risperidone, asenapine, MDL-100907, cyproheptadine, pizotifen, LY-367,265, 2-alkyl-4-aryl-tetrahydro-pyrimido-azepine, 9-aminomethyl-9,10-dihydroanthracene (AMDA), haloperidol, chlorpromazine, hydroxyzine (atarax), 5-MeO-NBpBrT, niaprazine, altanserin, aripiprazole, etoperidone, setoperone, chlorprothixene, cinaserin, adatanserin, medifoxamine, rauwolscine, 2026204976   25 Jun 2026 phenoxybenzamine, pruvanserin, deramciclane, nelotanserin, lubazodone, mepiprazole, xylamidine, R-(+)-alpha-(2,3-dimethoxyphenyl)-1-[2-(4-fluorophenethyl)]-4-piperidinemethanol (M100907), mianserin, AT 1015, DV 7028, eplivanserin, 4F 4PP, fanaserin, alpha-phenyl-1-(2-phenylethyl)-4-piperidinemethanol (MDL 11,939), melperone, mesulergine, paliperidone, 1-[2 5 (3,4-Dihydro-1 / 7-2-benzopyran-1-yl)ethyl]-4-(4-fluorophenyl)piperazine dihydrochloride (PNU 96415E), (2R,4R)-5-[2-[2-[2-(3-methoxyphenyl)ethyl]phenoxy]ethyl]-1-methyl-3-pyrrolidinol (R-96544), sarpogrelate, spiperone, ziprasidone, zotepine, and 7-[[4-[2-(4-fluorophenyl)ethyl]-1-piperazinyl]carbonyl]-1 / 7-indole-3-carbonitrile (EMD 281014). Suitable 5-HT2a reverse agonists include but are not limited to, AC-90179, nelotanserin 10   (APD-125), eplivanserin, pimavanserin (ACP-103), and volinaserin. In certain embodiments, the 5-HT2a antagonist is selected from the compounds of Table 8: Table 8: 5-HT2a antagonists ^Ace promazine mipramine ^Agomelatine Lisuride ^Amitriptyline Loxapine ^Amoxapine Lurasidone ^Amperozide Mesoridazine ^APD791 Methotrimeprazine ^Aripiprazole Methysergide ^Aripiprazole lauroxil Mianserin plonanserin Mirtazapine Prexpiprazole Butriptyline paptodiame pariprazine Mefazodone Mortriptyline Olanzapine                | Daliperidone ^Chlorpromazine Pimavanserin phlorprothixene Pizotifen pinitapride Promazine pitalopram Propiomazine plomipramine PRX-08066 plozapine Quetiapine pyclobenzaprine Risperidone Pyproheptadine Sertindole peramciclane Thioproperazine 2026204976   25 Jun 2026 Desipramine Thioridazine Dosulepin Tramadol                 ; Doxepin Trazodone Epinastine Triflupromazine             ; Esmirtazapine Etope ridone Flibanserin Fluoxetine Trimipramine YKP-1358               ] Yohimbine Ziprasidone Flupentixol Zotepine                    ; Fluspirilene Zuclopenthixol lloperidone In some embodiments, the disclosure provides a method of reducing the negative side effects associated with a traumatic psychedelic experience in a subject undergoing treatment with psilocybin, the method comprising administering to the subject: i) psilocybin or a precursor or derivative thereof, and ii) one or more cannabinoids or cannabinoid derivatives. In some embodiments, the cannabinoid is selected from THC (tetrahydrocannabinol), THCA (tetrahydrocannabinolic acid); CBD (cannabidiol); CBDA (cannabidiolic acid); CBN (cannabinol); CBG (cannabigerol); CBC (cannabichromene); CBL (cannabicyclol); CBV (cannabivarin); THCV (tetrahydrocannabivarin); CBDV (cannabidivarin); CBCV (cannabichromevarin); CBGV (cannabigerovarin); CBGM (cannabigerol monomethyl ether); CBE (cannabielsoin); or CBT (cannabicitran). In particular embodiments, the cannabinoid is CBD (cannabidiol). In some embodiments, at least one symptom of a disease, disorder, or condition described herein is alleviated within 24 hours of administering psilocybin. In some embodiments, at least one symptom of the disease, disorder, orcondition is alleviated within 1 week of the administering. In some embodiments, at least one symptom of the disease, disorder, or condition is alleviated within 1 month of the administering. In some embodiments, at least one symptom of the disease, disorder, or condition is alleviated within 6 months of the administering. In some embodiments, at least one symptom of the disease, disorder, or condition is alleviated within 12 months of the administering. In some embodiments, at least one symptom of the disease, disorder, or condition is alleviated for a period of at least 1 month after administering psilocybin. In some embodiments, 2026204976   25 Jun 2026 at least one symptom of the disease, disorder, or condition is alleviated for a period of at least 3 months after the administering. In some embodiments, at least one symptom of the disease, disorder, or condition is alleviated for a period of at least 6 months after the administering. In some embodiments, at least one symptom of the disease, disorder, or condition is alleviated for a period of at least 12 months after the administering. In some embodiments, no other treatment is administered to the subject to treat the disease, disorder, or condition before administration of the psilocybin. In some embodiments, no other treatment is administered to the subject to treat the disease, disorder, or condition after administration of the psilocybin. Safety and Efficacy of Psilocybin The present disclosure also relates to the safety and efficacy of the use of psilocybin as disclosed herein. The following is a non-exhaustive list of tests that can be used to determine the effects of psilocybin, and in particularthe psilocybin formulations as disclosed herein administered as disclosed herein. In some embodiments, the Spatial Working Memory (SWM) test is utilized to evaluate the safety and efficacy of psilocybin as disclosed herein. SWM requires retention and manipulation of visuospatial information. Study subjects are required to find the blue tokens in the on-screen ‘boxes’. Boxes are searched by touching them to determine whether they contain a token. Once a token has been located it is ‘stacked’ in a column on the right of the screen. Study subjects then search for further tokens until they have all been located. The remaining tokens will thereafter only be found in boxes that have not so far yielded a token. Study subjects are explicitly told this is the case and it they revisit a box in which a token has been found they commit a ‘between error’, the usual primary metric for this test. Occasions on which the subject revisits a box in the same search are scored as a ‘within’ error. Many study subjects will adopt a search strategy via which they systematically search the array of boxes. This is also scored by the Cambridge Neuropsychological Test Automated Battery system and yields a ‘strategy’ score. SWM performance is impaired by damage to the prefrontal cortex, especially the dorsolateral prefrontal cortex. Similarly, in neuroimaging studies in healthy volunteers, SWM performance is associated 2026204976   25 Jun 2026 with activations in the dorsolateral and mid-ventrolateral prefrontal cortex. This test takes approximately 4 min to complete. In some embodiments, the efficacy of psilocybin is evaluated using the spatial working memory between errors (SWMBE) score. In some embodiments, after treating according to the methods of the disclosure, a subject’s SWMBE score decreases by between about 5 % and about 100 %, for example, about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, or more, compared to prior to treatment. In some embodiments, the efficacy of psilocybin is evaluated using the spatial working memory strategy (SWMS) score. In some embodiments, after treating according to the methods of the disclosure, a subject’s SWMS score decreases by between about 5 % and about 100 %, for example, about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, or more, compared to prior to treatment. In some embodiments, the Rapid Visual Information Processing (RVP) test is utilized to evaluate the safety and efficacy of psilocybin. The RVP is a measure of sustained attention outputting measures of response accuracy, target sensitivity and reaction times. In this test, the study subject is required to monitor a stream of digits from 2 to 9 for specific sequences (e.g., 35-7) and to acknowledge detection of the sequence by touching the on-screen response button as quickly as possible after presentation of the third digit. Digits are presented pseudorandomly to create the possibility of ‘false alarm’ responses in which the first 2 digits of a sequence are not followed by a true target, e.g., when 3 is followed by a 5, but not then by a 7. In order to complete the task successfully study subjects must sustain attention to the white box in which the digits appear. Performance on this task is measured by the speed of response to the presentation of the final digit of a target, as well as the study subject’s ability to detect specified sequences. This test takes approximately 7 min to complete. In some embodiments, performance on the Rapid Visual Information Processing test is reported using a RVP A Prime (RPVA) score. Higher scores RVPA scores indicated better performance. In some embodiments, after treating according to the methods of the disclosure, a subject’s RVPA score increases by between about 5 % and about 300 %, for example, about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, 2026204976   25 Jun 2026 about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %,about 100 %,about 110 %, about 120 %, about 130 %, about 140 %, about 150 %, about 160 %, about 170 %, about 180 %, about 190 %, about 200 %, about210 %, about 220 %, about 230 %, about240 %, about250 %, about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %, or more, compared to prior to treatment. In some embodiments, the Paired Associates Learning (PAL) test is utilized to evaluate safety and / or efficacy of psilocybin. The PAL task is a measure of visuo-spatial memory in which study subjects are required to remember locations at which visual stimuli are located. Boxes are displayed on the screen and are “opened” in a randomized order. One or more of them will contain a pattern. The patterns are then displayed in the middle of the screen, one at a time and the subject must select the box in which the pattern was originally located. If the subject makes an error, the boxes are opened in sequence again to remind the subject of the locations of the patterns. Increased difficulty levels can be used to test high-functioning, healthy individuals. The primary metric for this test is the number of errors made. This test takes approximately 8 min to complete. Successful performance of the PAL test is dependent on functional integrity of the temporal lobe, particularly the entorhinal cortex. In some embodiments, the Paired Associates Learning total errors adjusted (PALTEA) score is used to assess the efficacy of psilocybin. In some embodiments, after treating according to the methods of the disclosure, a subject’s PALTEA score decreases by between about 5 % and about 100 %, for example, about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, or more, compared to prior to treatment. In some embodiments, the efficacy and / or safety of psilocybin is evaluated using the cognitive flexibility panel test. In some embodiments, the Emotion Recognition Task (ERT) test is utilized to evaluate the safety and / or efficacy of psilocybin. The ERT measures the ability to identify 6 basic emotions in facial expressions along a continuum of expression magnitude. In some embodiments, the ERT is performed according to the following protocol: Subjects are shown computer morphed images derived from the facial features of real individuals each showing a specific emotion, on a screen, one at a time. Each face is displayed for 200 ms and then immediately covered up, and the subject must select which emotion the face displayed from the six options (happy, sad, anger, fear, 2026204976   25 Jun 2026 surprise, disgust). The ERT percent correct (ERTPC) of correct responses (emotion selection) the subject made is assessed. A higher score indicates better performance. In some embodiments, after treating according to the methods of the disclosure, a subject’s ERTPC increases by between about 5 % and about 300 %, for example, about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, about 100 %, about 110 %, about 120 %, about 130 %, about 140 %, about 150 %,about 160 %,about 170 %,about 180 %,about 190 %, about 200 %, about 210 %, about 220 %,about 230 %,about 240 %,about 250 %,about 260 %,about 270 %,about 280 %,about 290 %, or about 300 %, or more, compared to prior to treatment. In some embodiments, the Intra-Extra Dimensional Set Shift (IED) test is used to evaluate the safety and / or efficacy of psilocybin. The IED consists of four 7-item subscales, each of which taps a separate aspect of the global concept "empathy." In some embodiments, the Intra-Extra Dimensional Set Shift total errors (IEDYERT) score is used to assess the efficacy of psilocybin. In some embodiments, after treating according to the methods of the disclosure, a subject’s IEDYERT score decreases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, or more, compared to prior to treatment. In some embodiments, the One Touch Stockings (OTS) of Cambridge test is used to evaluate the safety and / or efficacy of psilocybin. The OTS is a test of executive function, based upon the Tower of Hanoi test. It assesses both the spatial planning and the working memory subdomains. This test takes approximately 10 min to perform. The OTS test reports an one touch stockings of Cambridge problems solved on first choice (OTSPSFC) score. A higher OTSPSFC score is associated with better executive function. In some embodiments, after treatment according to the methods of the disclosure, a subject’s OTSPSFC score increases by between about 5 % and about 300 %, for example, about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, about 100 %,about 110 %,about 120 %,about 130 %,about 140 %, about 150 %, about 160 %, about 170 %,about 180 %,about 190 %,about 200 %,about 210 %,about 220 %,about 230 %,about 2026204976   25 Jun 2026 240 %, about 250 %, about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %, or more, as compared to prior to treatment. In some embodiments, verbal fluency is used to evaluate the safety and / or efficacy of psilocybin. In the verbal fluency test, the study subject is asked to name as many different category exemplars (e.g., ‘animals’) as they can in 1 min, subject to certain scoring rules, such as repetition. Successful performance on this test is reliant on the integrity of a number of cognitive abilities and especially those traditionally viewed as executive functions, such as planning and working memory. The primary metric for this test is the total number of acceptable words generated. In some embodiments, after treatment with psilocybin, a subject’s verbal fluency category score improves by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, about 100 %, about 110 %,about 120 %,about 130 %, about 140 %, about 150 %, about 160 %, about 170 %, about 180 %,about 190 %,about 200 %, about 210 %, about 220 %, about 230 %, about 240 %, about 250 %, about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %, or more, as compared to prior to treatment. In some embodiments, the Digit Span Forward (DSF) test is used to evaluate the safety and / or efficacy of psilocybin. DSF is used to measure number storage capacity. Subjects hear a sequence of digits and are tasked to recall the sequence correctly, with increasingly longer sequences being tested in each trial. The subject’s span is the longest number of sequential digits that can accurately be remembered. Digit span tasks can be given forwards or backwards, meaning that once the sequence is presented, the subject is asked to either recall the sequence in normal or reverse order. For this study, subjects will be asked to recall the sequence in the order presented, i.e., Digit Span Forward. The primary metric for this test is the number of digit sequences successfully recalled. In some embodiments, after treatment with psilocybin, a subject’s Digit Span Forward score improves by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, about 100 %, about 110 %, about 120 %, about 130 %, about 140 %, about 150 %, about 160 %, about 170 %, about 180 %, about 190 %, about 200 %, about 210 %, about 220 %, about 230 %, 2026204976   25 Jun 2026 about 240 %,about 250 %,about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %, or more, as compared to prior to treatment. In some embodiments, the Five Dimension Altered States of Consciousness questionnaire (5D-ASC) is utilized to evaluate the safety and / or efficacy of psilocybin. The 5D-ASC measures the acute drug effects using 5 primary dimensions and 11 lower-order scales to assess alterations in mood, perception and experience of self in relation to environment and thought disorder. The 5 dimensions include oceanic boundlessness, anxious ego dissolution, visionary restructuralization, auditory alterations and reduction of vigilance. In some embodiments, after treatment according to the methods of the disclosure, a subject experiences an increase on a dimension or a subscale compared to prior to treatment. The lower-order scales include “experience of unity,” “spiritual experience,” “blissful state,” “insightfulness,” “disembodiment,” “impaired control of cognition,” “anxiety,” “complex imagery,” “elementary imagery,” “audio-visual synesthesia,” and “changed meaning of percepts.” In some embodiments, the increase is about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, about 100 %, about 110%, about 120 %, about 130 %,about 140 %,about 150 %,about 160 %,about 170 %, about 180 %, about 190 %, about 200 %,about 210 %,about 220 %,about 230 %,about 240 %, about 250 %,about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %, or more, compared to prior to treatment. In some embodiments, the Positive and Negative Affect Schedule (PANAS) is used to evaluate the safety and / or efficacy of psilocybin. The PANAS measures the acute emotional drug effects and comprises 2 mood scales that measure positive and negative affect. Positive affect refers to the propensity to experience positive emotions and interact with others positively. Negative affect involves experiencing the world in a more negative way. Subjects respond to 10 questions associated with negative affect and 10 questions associated with positive affect. The questions are scaled using a 5-point scale that ranges from “slightly or not at all (1)” to “extremely (5)”. A total higher score on the positive affect questions indicates more of a positive effect while a lower score on the negative affect questions indicates less of a negative affect. In some embodiments, after treating according to the methods of the disclosure, a subject experiences a decrease in negative affect score of the PANAS, between about 5 % and about 100 %, for example about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, compared to prior to 2026204976   25 Jun 2026 treatment. In some embodiments, after treating according to the methods of the disclosure, a subject experiences an increase in positive affect score of the PANAS, between about 5 % and about 100 %, for example about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, about 110 %, about 120 %, about 130 %, about 140 %, about 150 %, about 160 %, about 170 %, about 180 %, about 190 %, about 200 %, about 210 %, about 220 %, about 230 %, about 240 %, about 250 %, about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %, or more, compared to prior to treatment. In some embodiments, the NEO-Five Factor Inventory (NEO-FFI) test is used to evaluate the safety and / or efficacy of psilocybin. The NEO-FFI evaluates 5 broad domains of personality -Neuroticism, Extroversion, Openness, Agreeableness and Conscientiousness. In some embodiments, the Symptom Checklist-90 item (SCL-90) questionnaire is used to evaluate the safety and / or efficacy of psilocybin. The SCL-90 is a relatively brief self-report psychometric instrument designed to evaluate a broad range of psychological problems and symptoms of psychopathology. In some embodiments, the SCL-90 is used to assess somatization, obsessive-compulsive behaviors, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoid ideation, and psychoticism of a subject treated according to the methods of the disclosure. The 90 items in the questionnaire are scored on a 5-point Likert scale, indicating the rate of occurrence of the symptom during the time reference. In some embodiments, after treating according to the methods of the disclosure, a subject’s SCL-90 score decreases by about 5 % to about 100 %, for example, by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %. In some embodiments, the Life Changes Inventory (LCI) questionnaire is utilized to evaluate the safety and / or efficacy of psilocybin. The LCI is designed as a questionnaire to investigate those variables present in the day-to-day experience of adults that might relate either to stability or decline of intellectual ability. In some embodiments, Social Cognition Panel scales are utilized to evaluate the safety and / or efficacy of psilocybin. The social cognition panel scales comprise the pictorial empathy 2026204976   25 Jun 2026 test (PET), reading the mind in the eyes test (RMET), social value orientation (SVO) test, the Toronto Empathy Questionnaire (TEQ), and the scale of social responsibility (SSR). In some embodiments, the Pictorial Empathy Test (PET) is utilized to evaluate the effect of psilocybin on affective empathy. In some embodiments, Reading the Mind in the Eyes Test (RMET) is utilized to evaluate the safety and / or efficacy of psilocybin. The RMET has 36 items, in which subjects are presented with a photograph of the eyes region of the face and must choose 1 of 4 adjectives or phrases to describe the mental state of the person pictured. A definition handout is provided at the beginning of the task and a practice item precedes the first trial. In some embodiments, the Social Value Orientation (SVO) test is utilized to evaluate the safety and / or efficacy of psilocybin. The SVO Slider Measure has 6 primary items with 9 secondary (and optional) items. All of the items have the same general form. Each item is a resource allocation choice over a well-defined continuum of joint payoffs. In some embodiments, after treating according to the methods of the disclosure, one or more of the subject’s Social Cognition Panel Scales Score, i.e., PET, RMET, SVO, TEQ, and / or SSR score), improves by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %,about 75 %, about 80 %,about 85 %, about 90 %, about 95 %, or about 100 %,about 110 %,about 120 %,about 130 %, about 140 %, about 150 %, about 160 %, about 170 %, about 180 %,about 190 %,about 200 %,about 210 %,about 220 %, about 230 %,about 240 %, about 250 %, about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %, or more, compared to prior to treatment. In some embodiments, the Toronto Empathy Questionnaire (TEQ) is utilized to evaluate the safety and / or efficacy of psilocybin. The TEQ represents empathy as a primarily emotional process. The TEQ has exhibited good internal consistency and high test-retest reliability. The TEQ is a brief, reliable and valid instrument for the assessment of empathy. In some embodiments, after treating according to the methods of the disclosure, a subject’s TEQ score increases by about 5 %, about 10 %, about 15 %, about 20 %, about 25 %, about 30 %, about 35 %, about 40 %, about 45 %, about 50 %, about 55 %, about 60 %, about 65 %, about 70 %, about 75 %, about 80 %, about 85 %, about 90 %, about 95 %, or about 100 %, about 110 %, about 2026204976   25 Jun 2026 120 %,about 130 %,about 140 %,about 150 %,about 160 %, about 170 %, about 180 %, about 190 %,about 200 %,about 210 %,about 220 %,about 230 %,about 240 %,about 250 %,about 260 %, about 270 %, about 280 %, about 290 %, or about 300 %, or more, compared to prior to treatment. In some embodiments, the Scale of Social Responsibility (SSR) is utilized to evaluate the safety and / or efficacy of psilocybin. The SSR measures perceptions regarding the importance of ethics and social responsibility. In some embodiments, the Sheehan Suicidality Tracking Scale (SSTS) is utilized to evaluate the safety and / or efficacy of psilocybin. The SSTS is a 16-item scale that assesses the seriousness of suicidality phenomena on a Likert-type scale (0-4) ranging from “not at all” (0) to “extremely”. The SSTS assesses the frequency of key phenomena and the overall time spent in suicidality. In some embodiments, the Mini International Neuropsychiatric Interview (MINI) (version 7.0.2) is utilized to evaluate the safety and efficacy of psilocybin. The MINI is a brief structured interview for the major Axis I psychiatric disorders in DSM-5 and International Classification of Diseases-10. In some embodiments, the MINI is used to diagnose a subject with a disorder. In some embodiments, the McLean Screening Instrument for Borderline Personality Disorder (MSIBPD) is utilized for evaluating the safety and / or efficacy of psilocybin. The MSIBPD is a useful screening tool for identifying the presence of DMS-IV borderline personality disorder. In some embodiments, the Tellegen Absorption Scale is utilized for evaluating the safety and / or efficacy of psilocybin. The Tellegen Absorption Scale is a 34-item multidimensional measure that assesses imaginative involvement and the tendency to become mentally absorbed in everyday activities. In some embodiments, the safety and / or efficacy of psilocybin is evaluated by physical examination. A physical examination, includes, but is not limited to, an examination of the subject’s general appearance, including an examination of the skin, neck, eyes, ears, nose, throat, heart, lungs, abdomen, lymph nodes, extremities and musculoskeletal system. In some embodiments, body weight and height of a subject are assessed. In some embodiments, body mass index is used to assess the safety and / or efficacy of psilocybin. 2026204976   25 Jun 2026 In some embodiments, an electrocardiogram (ECG) is utilized to evaluate the safety and / or efficacy of psilocybin. In some embodiments, a Standard 12-lead ECG is obtained. In some embodiments, vital signs of a subject are used to evaluate safety and / or efficacy of psilocybin. Vital signs include, but are not limited to, blood pressure (BP), respiratory rate, oral body temperature and pulse. In some embodiments, blood pressure is taken after a subject has been sitting down for at least three minutes. In some embodiments, clinical laboratory tests are utilized to evaluate the safety and / or efficacy of psilocybin. In some embodiments, the clinical laboratory tests include blood samples and / or urine samples. In some embodiments, hemoglobin, hematocrit, red blood cell count, mean corpuscular hemoglobin, mean corpuscular volume, mean corpuscular hemoglobin concentration, white blood cell count (with differential) and platelet count are measured to evaluate safety and / or efficacy of psilocybin. In some embodiments, albumin, alkaline phosphatase, alanine aminotransferase (ALT), amylase, aspartate aminotransferase (AST), bicarbonate, bilirubin (direct, indirect and total), calcium, chloride, creatine kinase, creatinine, y-glutamyl transferase, glucose, lactate dehydrogenase, lipase, magnesium, phosphate, potassium, protein-total, sodium, blood urea nitrogen and / or uric acid are measured to evaluate the safety and / or efficacy of psilocybin. In some embodiments, urine is tested for pregnancy and / or illicit drugs. In some embodiments, the safety and / or efficacy of psilocybin are evaluated by measuring adverse events. Adverse events are classified as mild, moderate, or severe. A mild adverse event does not interfere in a significant mannerwith the subject’s normal level of functioning. A moderate adverse event produces some impairment of functioning, but is not hazardous to the subject’s health. A serious adverse event produces significant impairment of functioning or incapacitation and is a definite hazard to the subject’s health. Adverse events may include, for example, euphoric mood, dissociative disorder, hallucination, psychotic disorder, cognitive disorder, disturbances in attention, mood alterations, psychomotor skill impairments, inappropriate affects, overdoses, and intentional product misuse. In some embodiments, serious adverse events include death, lifethreatening adverse events, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability / incapacity, and congenital anomaly / birth defect in the offspring of a subject who received psilocybin. In some embodiments, serious adverse events include intensive treatment in an emergency room or at home for allergic bronchospasm, blood 2026204976   25 Jun 2026 dyscrasias or convulsions that do not result in inpatient hospitalization, or the development of drug dependency or drug abuse. NUMBERED EMBODIMENTS OF THE DISCLOSURE In addition to the disclosure above, the Examples below, and the appended claims, the disclosure sets forth the following numbered embodiments. Numbered Embodiments for Treatment of Anxiety Disorders with Psilocybin 1. A method of treating an anxiety disorder in a subject in need thereof, the method comprising administering to the subject a therapeutically effective amount of psilocybin or an active metabolite thereof. 2. The method of embodiment 1, wherein the active metabolite is psilocin. 3. The method of any one of embodiments 1-2, wherein the anxiety disorder is a generalized anxiety disorder. 4. The method of any one of embodiments 1-2, wherein the anxiety disorder is a panic disorder. 5. The method of any one of embodiments 1-2, wherein the anxiety disorder is a post-traumatic stress disorder. 6. The method of any one of embodiments 1-2 wherein the anxiety disorder is a social anxiety disorder. 7. The method of any one of embodiments 1-2, wherein the anxiety disorder is an obsessive-compulsive and related disorder. 8. The method of embodiment 7, wherein the obsessive-compulsive and related disorder is obsessiv...

Claims

1. A method for treating a substance disorder in a subject in need thereof, the methodcomprising orally administering to the subject a therapeutically effective amount of an oral dosage form comprising:crystalline psilocybin characterized by X-ray power diffraction (XRPD) peaks at 11.5±0.1, 12.0±0.1, 14.5±0.1, 17.5±0.1 and 19.7±0.1 °20, wherein the crystalline psilocybin has a chemical purity of greater than 97% as determined by HPLC analysis; and a pharmaceutically acceptable excipient.

2. The method of claim 1, wherein the substance disorder is an alcohol use disorder.

3. The method of claim 1, wherein the substance disorder is a cannabis use disorder.

4. The method of claim 1, wherein the substance disorder is a hallucinogen use disorder.

5. The method of claim 1, wherein the substance disorder is an inhalant use disorder.

6. The method of claim 1, wherein the substance disorder is a cocaine use disorder.

7. The method of claim 1, wherein the substance disorder is an opioid use disorder.

8. The method of claim 1, wherein the substance disorder is a sedative, hypnotic, oranxiolytic use disorder.

9. The method of claim 1, wherein the substance disorder is a stimulant use disorder.

10. The method of claim 1, wherein the substance disorder is a tobacco use disorder.

11. The method of any one of claims 1-10, wherein about 1 mg to about 40 mg of thecrystalline psilocybin is administered.

12. The method of any one of claims 1-10, wherein about 1 mg of the crystalline psilocybin is administered.2026204976   25 Jun 202613. The method of any one of claims 1-10, wherein about 5 mg of the crystalline psilocybin is administered.

14. The method of any one of claims 1-10, wherein about 10 mg of the crystallinepsilocybin is administered.

15. The method of any one of claims 1-10, wherein about 25 mg of the crystallinepsilocybin is administered.

16. The method of any one of claims 1-15, wherein the oral dosage form is a capsule.

17. The method of any one of claims 1-15, wherein the oral dosage form is a tablet.

18. The method of any one of claims 1-17, wherein the crystalline psilocybin is further characterized by at least one peak selected from the group consisting of 20.4±0.1, 22.2±0.1, 24.3±0.1, and 25.7±0.1 °20.

19. The method of any one of claims 1-18, wherein the crystalline psilocybin has no single impurity of greater than 1% as determined by HPLC analysis.

20. A method for treating a substance disorder, the method comprising administering a therapeutically effective amount of psilocybin to a subject in need thereof, wherein the psilocybin comprises crystalline psilocybin characterized by X-ray power diffraction (XRPD) peaks at 11.5±0.1, 12.0±0.1, 14.5±0.1, 17.5±0.1 and 19.7±0.1 °20, and wherein the psilocybin has a chemical purity of greater than 97% as determined by HPLC analysis.

21. The method of claim 20, wherein the substance disorder is an alcohol use disorder, a cannabis use disorder, a hallucinogen use disorder, an inhalant use disorder, a cocaine use disorder, an opioid use disorder, a sedative, hypnotic, or anxiolytic use disorder, a simulant use disorder, or a tobacco use disorder.

22. The method of claim 20 or claim 21, wherein about 1 mg to about 40 mg of psilocybin is administered.2026204976   25 Jun 202623.   The method of claim 20 or claim 21, wherein about 1 mg of psilocybin is administered.

24. The method of claim 20 or claim 21, wherein about 5 mg of psilocybin is administered.

25. The method of claim 20 or claim 21, wherein about 10 mg of psilocybin is administered.

26. The method of claim 20 or claim 21, wherein about 25 mg of psilocybin is administered.

27. The method of any one of claims 20-26, wherein the psilocybin is orally administered.

28. The method of any one of claims 20-27, wherein the psilocybin is administered in acapsule or a tablet.

29. The method of any one of claims 20-28, wherein the crystalline psilocybin is further characterized by at least one peak selected from the group consisting of 20.4±0.1, 22.2±0.1, 24.3±0.1, and 25.7±0.1 °20.

30. The method of any one of claims 20-29, wherein the crystalline psilocybin has no single impurity of greater than 1% as determined by HPLC analysis.

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