106 results about "Sustained Release Formulations" patented technology

The invention provides a compound phospholipid gel sustained release preparation and a preparation method thereof. The preparation mainly comprises a local anesthetic, a non-steroidal anti-inflammatory drug, phospholipid and water for injection. The preparation can be injected around a surgical incision or directly instilled or coated at the surgical incision to achieve the purpose of long-acting analgesia, and is used for postoperative analgesia.

Non-aqueous membrane emulsion methods for producing polymeric and polymer-coated microparticles are provided. Some embodiments provide methods for producing a sustained release or controlled release microparticle by combining micronized protein powder and a polymer into a hydrocarbon solvent to form a non-aqueous first solution, agitating the first non-aqueous solution to form a suspension, feeding the suspension into a dispersion pump, wherein the suspension is infused through a porous membrane into a continuous phase comprising a fluorocarbon liquid and a fluorosurfactant to form a hydrocarbon-in-fluorocarbon emulsion. The hydrocarbon solvent, the fluorocarbon liquid, and the fluorosurfactant are removed, and the microparticles are collected.

The invention discloses a glycocholic acid sustained release preparation and a production process thereof. The glycocholic acid sustained-release preparation comprises glycocholic acid sustained-release pellets, and the preparation method of the glycocholic acid sustained-release preparation comprises the following steps: firstly, preparing glycocholic acid and auxiliary materials into a drug-containing pellet core according to a formula, then coating the drug-containing pellet core with a sustained-release material to obtain the sustained-release pellets, and finally, filling the sustained-release pellets into capsules to obtain the glycocholic acid sustained-release preparation. The preparation method comprises the following steps: carrying out wet granulation-extrusion rolling to obtain wet pills, drying, and coating with a fluidized bed to obtain the glycocholic acid sustained-release pellets. The quality of the drug-loaded pellet is controlled according to indexes such as roundness, bulk density, yield and the like, the drug release effect of the sustained-release pellet is evaluated according to the dissolution rate, and the release mechanism and the initial stability of the glycocholic acid sustained-release pellet are investigated. The invention has the advantages of favorable sustained-release effect, reduced medication frequency, simple and feasible preparation process, favorable reproducibility and favorable drug stability, is suitable for industrial production, aims at supporting the research and development of the compound sustained-release drug, and has obvious social and economic benefits.

A method for minimally invasive treatment of benign prostatic hyperplasia (BPH) tissue. The system includes a sustained release formulation comprising a cytostatic or cytotoxic drug, and an applicator or delivery system for locally delivering a composition comprising or consisting essentially of the sustained release formulation to the prostate. The applicator containing the composition is characterized by a KIR value of 15 to 1,000 centipoise per unit area.

The present invention provides, in part, compositions comprising a peptide that is larazotide or larazotide derivative, or salt thereof, contained within a matrix that provides for controlled release and sustained release formulations. The present invention contemplates that these compositions, formulations and methods can be useful for treating diseases and disorders of the small bowel.

A prolonged-release oral solid formulation of pirfenidone includes a sustained-release formulation. The sustained-release formulation contains a swelling material, a shaping material and an adhesive material. The weight percentage of the swelling material in the solid formulation is 10%-25%; the weight percentage of the shaping material in the solid formulation is 10%-25%; and the weight percentage of the adhesive material in the solid formulation is 1%-8%. The solid formulation only needs to be taken once a day, regardless of whether it is taken before or after meals. It takes effect quickly after taking it, and can be stably and effectively released for 24 hours, providing a pirfenidone product with significantly improved compliance and stable blood drug concentration.

The present application provides approximately spherical lactic acid-glycolic acid copolymer (PLGA) microparticles comprising a biologically active substance, wherein an average volume-based particle diameter of the PLGA microparticles is 1 µm or more and 150 µm or less, and a Reactive Span Factor (R.S.F.) of the PLGA microparticles is satisfied with formula (1): 0.1 < (R.S.F.) ≤ 1.7 formula (1), wherein an R.S.F. means (D90 - D10) / D50; D90 is a particle diameter (µm) corresponding to the cumulative 90% by volume of the cumulative particle diameter distribution from the small particle side; D50 is a particle diameter (µm) corresponding to the cumulative 50% by volume of the cumulative particle diameter distribution from the small particle side; and D10 is a particle diameter (µm) corresponding to the cumulative 10% by volume of the cumulative particle diameter distribution from the small particle side; and an efficient production method thereof. The present invention provides the approximately spherical PLGA microparticles having an average volume-based particle diameter of 1 µm or more and 150 µm or less wherein there are few coarse particles or ultrafine particles without a classification step, and the particle diameter distribution is sharp around the target particle diameter.

Provided herein are pharmaceutical formulations comprising glucokinase activator, or a prodrug, or a pharmaceutically acceptable salt, an isotope labeled analogue, a crystalline form, a hydrate, a solvate, or a diastereomeric or enantiomeric form thereof and the use thereof for treating diseases; the pharmaceutical formulations are in the form of immediate-release formulations, extended-release formulations, or combination of immediate-release formulation and extended-release formulations. The pharmaceutical formulations achieved once-a-day therapy for some diseases, in particular, type II Diabetes Mellitus with obesity. The pharmaceutical formulations exhibit sustained 24 hours of glucose-lowering effects. The pharmaceutical formulations also achieved lower Cmax, extended T1 / 2 as well as maintained similar bioavailability and increased MRT compared with commercial Dorzagliatin tablet, enhanced the pharmacology effect of restoring the glucose stimulated GLP-1 secretion in diabetes with obesity.

The invention provides a long-acting microsphere sustained release preparation and a preparation method thereof, and belongs to the technical field of sustained release preparations, the long-acting microsphere sustained release preparation is prepared from the following raw materials of effective components: 9.5 to 10.5 parts of antipsychotic drug, 48 to 50 parts of hydroxypropyl-beta-cyclodextrin, 50 to 52 parts of polylactic acid-glycolic acid copolymer, 1.25 to 1.3 parts of glycerol triacetate and 10 to 11 parts of polyvinyl alcohol. The preparation method comprises the following steps: firstly, the hydroxypropyl-beta-cyclodextrin is used for clathration of the antipsychotic drug, the obtained clathrate compound is further clathrated by the polylactic acid-glycolic acid copolymer, and the long-acting microsphere sustained release preparation is obtained. According to the invention, the double-valve design of beta-CD and PLGA synergistic inclusion is utilized, so that the preparation can realize two-stage release; the macroscopic slow release characteristic of the PLGA is combined with the microcosmic express characteristic of the hydroxypropyl-beta-cyclodextrin, so that the technical limitation of a single carrier is broken through.

The present disclosure relates to a method of preparing a sustained release formulation, the method comprises, mixing of a carrier composition with a volatile organic substance to form a blend; the carrier composition comprises: (i) a hydrophobic organic carrier; and (ii) a quaternary amine, as well as to methods of preparing the sustained release formulation. Also forming part of the present disclosure is a sustained release formulation comprising a blend of: (i) a hydrophobic organic carrier; (ii) a quaternary amine and (iii) a volatile organic substance; wherein the sustained release formulation is essentially water free; and wherein the quaternary amine is of a source different from the source of the hydrophobic organic carrier, as well as to the uses of the sustained release formulation for controlling a target organism. Finally, there is a disclosed carrier composition comprising a blend of: (i) a hydrophobic organic carrier; and (ii) a quaternary amine.

The invention relates to an aldenafil sustained-release pellet as well as a preparation method and application thereof. The aldenafil sustained-release pellet sequentially comprises the following components in percentage by mass: 60-85% of a drug-containing pellet core, 0.5-3% of an isolating layer, 2-8% of an acidic coating layer and 5-30% of a sustained-release coating layer from inside to outside, the medicine-containing pill core comprises the aldenafil and / or pharmaceutically acceptable salt or ester thereof, a diluent and an adhesive; the isolating layer comprises a film coating material; the acidic coating layer comprises an organic acid and an acidic polymer; the organic acid accounts for 0.5%-5% of the mass of the aldenafil sustained-release pellet; the sustained-release coating layer comprises a sustained-release material. The aldenafil sustained-release pellet can provide an acidic microenvironment in time, meanwhile, the acidic buffering capacity of the microenvironment is improved, the aldenafil sustained-release pellet can be dissolved out in different dissolution media within 12-24 h without pH dependence, the aldenafil sustained-release pellet can be completely dissolved out in an alkaline intestinal environment, absorption of a sustained-release preparation is not affected, and the aldenafil sustained-release pellet has high bioavailability.

Therapeutic compositions deliver a therapeutic amount of methylphenidate in a delayed and extended release formulation. The dosage form exhibits a lag time prior to release of from 6 to 8 hours or longer, followed by a sustained release period.

The sustained-release formulation of this invention, with its increased initial release, exhibits a rapid release effect within 24 hours after administration, followed by a sustained-release effect, thus simultaneously achieving both prolonged efficacy and rapid initial release. The sustained-release formulation of this invention, containing microspheres of leuprorelin, possesses excellent bioavailability and has been proven safe in humans; therefore, it can be effectively and safely used to treat various luteinizing hormone-releasing hormone-related diseases such as endometriosis, uterine fibroids, prostate cancer, premenopausal breast cancer, and central precocious puberty.

The present invention relates to a pharmaceutical composition comprising a pharmaceutically acceptable vehicle and non-pungent derivatives of capsaicin, in their tautomeric forms and pharmaceutically acceptable salts, as the sole active ingredient, for use in the stimulation of the sphenopalatine ganglion and the enhancement of cerebral blood flow, to prevent or reduce brain injury resulting from decreased cerebral blood flow. The composition is administered via the oral transmucosal route, preferably in the form of a mucoadhesive tablet, and may be formulated for immediate or prolonged release, ensuring effective and tolerable absorption while avoiding the irritant effects associated with pungent capsaicin.

The present application relates to microspheres in which a physiologically active substance is uniformly dispersed and a sustained release preparation containing the same. In the present application, provided are microspheres having a lactic acid / glycolic acid copolymer (PLGA) as a main component in which a physiologically active substance is uniformly dispersed, the microspheres being characterized in that the average volume-based particle diameter of the microspheres is 1 [mu] m to 150 [mu] m, and blocks or pores of the physiologically active substance are not present in the microspheres in an amount of 1.5 [mu] m or more. The microspheres according to the present invention can appropriately control the initial release amount of a physiologically active substance and the release rate during the subsequent release period, and can continuously release the physiologically active substance in a living body for a certain period of time.

The application discloses a kind of self-assembly hydrogel, preparation method and application, belong to material field.The application claims to protect a kind of self-assembly hydrogel, it is formed by glycyrrhizic acid, five gallate glucose and paeonol by molecular self-assembly;Wherein, the mass ratio of glycyrrhizic acid and five gallate glucose, paeonol is (10~60) :(1~8) :(2~8).The self-assembly hydrogel provided by the application is suitable for skin, raw material is natural, biocompatibility is good, mechanical and storage stability is excellent, can release paeonol and the transdermal effect is good, three components synergistically improve atopic dermatitis and other skin inflammation, and clinical value is high.In addition, the preparation process of the self-assembly hydrogel of the application is simple, can be prepared using conventional one-pot method, easy to produce.Therefore, the self-assembly hydrogel of the application has the prospect of developing into paeonol sustained-release delivery system, paeonol transdermal sustained-release preparation or skin inflammation treatment drug.

Provided is an injectable sustained release pharmaceutical formulation, including 3-acyl-naltrexone or a pharmaceutically acceptable salt thereof, a biocompatible organic solvent, and optionally a biocompatible polymeric material. Also provided is a method for treating opioid use disorder or alcoholism, including administering the injectable sustained release pharmaceutical formulation to a subject in need thereof. The pharmaceutical formulation provides a sustained release profile after one single injection, and the plasma levels of naltrexone in minipigs could provide a sustained release for 2 months.

This invention relates to the field of pharmaceutical formulation technology, specifically to a sustained-release formulation of rifabutin, and more specifically, to a sustained-release rifabutin formulation composition for treating Helicobacter pylori infection. The key technical point of this invention is that it uses a novel antibiotic for treating Helicobacter pylori infection as the active ingredient, supplemented with specific inactive ingredients, including a hydrophilic gel-type matrix sustained-release material, a swelling agent, a buoyancy aid, and a lubricant. Through the synergistic effect of the hydrophilic gel-type matrix sustained-release material, the swelling agent, and the buoyancy aid, the composition can rapidly swell in gastric juice and maintain a floating state, thereby significantly prolonging the residence time of the formulation in the stomach and upper small intestine. This invention solves the technical problem of conventional formulations having a short residence time in the stomach and requiring frequent administration to maintain an effective antibacterial concentration, achieving the goal of effectively eradicating Helicobacter pylori by reducing the number of doses while maintaining an effective concentration at the site of infection for a longer period.

The invention belongs to the technical field of medical drugs, and discloses a nifedipine biphase sustained release preparation and a preparation method thereof. The nifedipine biphase sustained-release preparation consists of a double-layer tablet core and a film coating, wherein the double-layer tablet core consists of a drug-containing quick-release layer and a drug-containing sustained-release layer; nifedipine is respectively dispersed in the sustained-release layer and the quick-release layer according to a certain proportion. The biphasic sustained release preparation provided by the invention can take effect quickly, has stable and lasting drug effect, is safe and reliable, and is simple and efficient in preparation process.

Drug-loaded microspheres containing both a steroidal anti-inflammatory drug and a non-steroidal anti-inflammatory drug and injectable formulations containing the microspheres for sustained release of both drugs are disclosed. Methods of making such drug-loaded microspheres, formulations, and use of them for treating pains and inflammations, especially those caused by rheumatoid arthritis or osteoarthritis using such microspheres and formulations are also described.

A malleable sustained release formulation is created utilizing a local anesthetic wherein the composition is made sustained release by incorporating it into a bovine or porcine hemostatic agent. The composition is malleable enough to fit into a cavity such as a dental cavity and form the shape of the cavity. In addition to providing sustained release of the anesthetic, the composition also provides quicker reduction in bleeding.

A non-aqueous emulsion process for producing polymeric microparticles or polymer coated microparticles is provided. A method produces a sustained release particulate composition by combining a protein powder and a polymer into a hydrocarbon solvent to form a non-aqueous first solution; and adding the first solution to a second solution to form a non-aqueous emulsion, where the second solution includes a fluorocarbon liquid and a fluorine-containing surfactant, the non-aqueous emulsion including a plurality of emulsion hydrocarbon droplets in the fluorocarbon liquid. A subsequent particulate hardening process comprises the steps of: removing the hydrocarbon solvent from the formed emulsion droplets, which can be accomplished by vaporizing the hydrocarbon under ambient conditions while stirring; or accelerated hardening by vacuum or by adding a hydrofluoroester as a co-solvent to the fluorocarbon. The fluorocarbon liquid is removed and washed with an additional fluorocarbon liquid to separate the sustained release microparticles, wherein the sustained release microparticles include one or more protein nuclei and a polymer skin layer.

The present invention provides pharmaceutical compositions and methods for treating fatigue or excessive daytime sleepiness associated with narcolepsy. [Solution] A pharmaceutical composition comprising an immediate-release component containing 4-((L-valyl)oxy)butanoic acid and a controlled-release component containing 4-((L-valyl)oxy)butanoic acid, as well as the pharmacokinetics of 4-((L-valyl)oxy)butanoic acid and γ-hydroxybutyrate after oral administration of the pharmaceutical composition are disclosed.

Pharmaceutical compositions of colchicine for once-a-day oral administration are provided. The formulations comprise a sustained-release component and an optional immediate-release component, the compositions of which can be selectively adjusted, respectively, to release the active ingredient along a pre-determined or desired release profile. Methods of treating or preventing cardiovascular disease and / or inflammatory disease in mammalian subjects comprising the administration of the novel formulations disclosed herein are also provided.

Disclosed is a sustained-release formulation of semaglutide. The sustained-release formulation of semaglutide comprises semaglutide or a pharmaceutically acceptable salt thereof, triacylglycerol, phosphatidylcholine, absolute ethanol, a solubilizer, and a pH regulator.

The present disclosure provides a gastroretentive drug delivery device having an expandable structure. The drug delivery device includes: a capsule body having a space formed therein; an arm mounted at one end of the capsule body, the arm comprising a first hinge part, a second hinge part, a third hinge part and an elastic support part which enable unfolding and folding, wherein the first hinge part engages the elastic support part, the second hinge part engages a wing of the arm and is connected rotatably to the first hinge part, the third hinge part is positioned at one end of the wing and is connected rotatably to the second hinge part, a sustained-release supporter is positioned to face the third hinge part, an immediate-release formulation is positioned to face the elastic support part, and a sustained-release formulation is positioned between the sustained-release supporter and the immediate-release formulation; an elastic body acting to move the elastic support part in a direction toward the one end of the capsule body within the capsule body; and a capsule cap configured to engage the other end of the capsule body.

The invention relates to a preparation method of a multilayer sustained-release drug-loaded microsphere for articular cavity injection, and belongs to the field of biomedical materials and sustained-release preparations. The microsphere aims at solving the problems that traditional articular cavity lubricating gel is short in acting time and uncontrollable in drug release, and common drug-loaded microspheres are remarkable in burst release and insufficient in lubricity. The microsphere is constructed by adopting a natural material with good biocompatibility, collagen is taken as a core to load a drug, and a chitosan controlled release layer and a sodium hyaluronate lubricating layer are sequentially coated through electrostatic adsorption and covalent crosslinking to form the composite microsphere with a'core-shell-lubrication 'multilayer structure. The preparation method is based on a technical path technology of combining'crosslinking agent premixing emulsification-in-situ reaction curing 'and'layer-by-layer self-assembly-covalent crosslinking', and effective entrapment of drugs, stable construction of a controlled release structure and regulation and control of a degradation period are realized by optimizing process conditions. The microsphere can realize long-acting release of a medicine in a simulated environment, and the sodium hyaluronate on the outer layer of the microsphere material can improve the injection and pushing smoothness and is beneficial to the instant lubricity of the microsphere and retention of the microsphere in an articular cavity; all layers of materials are biodegradable, and degradation products have a potential nutrition support effect on joint tissues. The invention provides a microsphere delivery system with comprehensive performance for local treatment of joint diseases such as osteoarthritis.

The invention relates to the technical field of sustained-release preparations, and discloses a hydrogel dressing based on a sugar response sustained-release drug as well as a preparation method and application of the hydrogel dressing. HA-PBA is used as a first network to provide sugar responsiveness and biological activity, PVA is used as a second network to enhance mechanical strength and moisture retention, HA-PBA and PVA form boric acid ester bonds under the alkaline condition of 7.2-9.0, a double-network structure is formed through interaction of the boric acid ester bonds and hydrogen bonds, and the hydrogel is obtained. The hydrogel formed by the invention can be endowed with self-healing and shear thinning characteristics, and the shear thinning characteristic enables the hydrogel to have injectability, so that the hydrogel is suitable for minimally invasive implantation; and the self-healing capability ensures that the dressing recovers integrity after the wound surface deforms. When the hydrogel is used for treating chronic diabetic wounds, borate bonds are dissociated under high glucose concentration, so that the degradation of the hydrogel network is accelerated, the functional protein medicine is released to realize treatment, and the treatment accuracy is improved.

It relates to sustained release formulations of human chorionic gonadotropin (hCG). The present disclosure relates to sustained release dosage forms of human chorionic gonadotropin (hCG) or derivatives or isoforms thereof. The sustained release hCG dosage forms include biodegradable polymer microspheres that provide sustained release of hCG over a desired period of time.

Provided are a sustained-release preparation and a preparation method therefor. The sustained-release preparation comprises a pharmaceutically active ingredient, triacylglycerol, phosphatidylcholine, a solvent, a solubilizer, and a pH regulator. The preparation method comprises: thoroughly mixing the pharmaceutically active ingredient, triacylglycerol, phosphatidylcholine, the solvent, the solubilizer, and the pH regulator.