48results about How to "Guaranteed content uniformity" patented technology

The invention relates to a partial pressure sintering method for sintering a neodymium-iron-boron magnet. Certain inert gases Ar are filled into various deflation sections in the sintering process, the pressure of the Ar gases inside a furnace is regulated according to blank deflation velocity and vacuum pump system exhaust velocity through vacuum degree control, so that heating sintering is carried out by uniformly deflating under different partial pressures of the Ar gases, and negative pressure is still kept. The partial pressure sintering method disclosed by the invention ensures the consistency and uniformity of magnetic property and saves the sintering time.

The invention provides a metformin compound pharmaceutical composition for treating type II diabetes and a preparation method thereof. The pharmaceutical composition contains a small dose of anti-diabetic medicine and a relatively large dose of metformin hydrochloride as active ingredients. The preparation method has a simple process, does not need special auxiliary materials, and is suitable for industrial production. Two active ingredients in the prepared pharmaceutical composition have the advantages of uniform content and good dissolubility.

The invention provides a rasagiline preparation and a preparation method thereof. The rasagiline preparation provided by the invention comprises rasagiline pharmaceutically acceptable salt and pharmaceutically acceptable auxiliary materials comprising a stabilizer and a filling agent. With the method provided by the invention, dissolution rate and stability of the rasagiline preparation are improved, preparation content uniformity is ensured, treatments of crushing and sieving are avoided, and loss and pollution are reduced. The method also has the advantages of simple operation, low cost, and no requirement on special equipment. The method is suitable to be applied on industrial productions.

The invention discloses calcium carbonate D3 chewable tablets for children calcium supplement, and a preparation method of the chewable tablets. The chewable tablets are prepared from the following components: calcium carbonate, vitamin D3 powder, maltodextrin, mannitol, magnesium stearate and essence. The preparation method comprises the following steps: (1) checking the needed raw materials and auxiliary materials, and respectively carrying out pretreatment on the qualified materials for later use; (2) preparing the calcium carbonate into suspension liquid, preparing the maltodextrin into a water solution, and evenly mixing the suspension liquid and the water solution; (3) carrying out spray drying to prepare maltodextrin-embedded calcium carbonate granules; (4) finishing the granules; (4) blending all the materials; (6) measuring the content of an intermediate, tabletting and bottling. After a spray drying technology is adopted, the gritty texture of the calcium carbonate can be effectively improved by embedding the calcium carbonate by using the maltodextrin; by adopting a direct tabletting technology, the production technology is greatly simplified; the calcium carbonate D3 chewable tablets are moderate in hardness, thus being suitable for children to chew.

The present invention discloses one kind of tiotropium bromide capsule atomized powder preparation, which includes tiotropium bromide or tiotropium bromide monohydrate in 0.04-1.5 wt% and fine lactose powder of size smaller than 15 microns for adsorbing tiotropium bromide or tiotropium bromide monohydrate. The present invention also provides the preparation process of the atomized powder preparation. The tiotropium bromide capsule atomized powder preparation has simple preparation process, excellent flowability and homogeneously distributed active component.

The invention discloses a process for preparing pediatric paracetamol and amantadine hydrochloride granules for treating children's common cold, wherein each unit of the preparation comprises Paracetamol 100mg, amantadine hydrochloride 40mg, artificial ox gallstone 4mg, caffeine 6mg and chlorpheniramine maleate 0. 8mg.

The invention relates to a methyldigoxin preparation capable of being rapidly absorbed in an oral cavity and a preparation method of the methyldigoxin preparation. The methyldigoxin preparation capable of being rapidly absorbed in the oral cavity comprises an active center, a compound absorption accelerating system and other pharmaceutically acceptable auxiliary materials. By utilizing characteristics that a sublingual mucosa has abundant blood vessels and a rapid blood flow, the methyldigoxin is prepared into the preparation capable of being rapidly absorbed in the oral cavity and is absorbed through the sublingual mucosa, and absorbed medicine directly enters systemic circulation. The technical difficulty that the methyldigoxin has a relatively small oil-water partition coefficient and low membrane permeability, is easy to degrade under an acidic condition and cannot be easily prepared into the preparation capable of being rapidly absorbed in the oral cavity in theory is overcome; the methyldigoxin is developed into the preparation which is high in membrane permeability, can rapidly have effect through the sublingual mucosa and has good compliance.

The invention discloses an indissolvable drug oral sustained-release composition, which is especially suitable for low-dose indissolvable drugs. The indissolvable drug oral sustained-release composition comprises sustained-release particles and a gel skeleton, wherein the sustained-release particles comprise an indissolvable drug, an enteric material and a liquid strong adsorption carrier; the gelskeleton comprises a hydrophilic gel skeleton material; and the sustained-release particles are obtained by preparing a suspension from the indissolvable drug and the enteric material and then spraying the suspension onto the liquid strong adsorption carrier. The sustained-release particles are partially wrapped by the gel skeleton to form a multi-sustained-release system technology, the releasetime is prolonged, the preparation process is simple, the efficiency is high, the drug mixing is uniform, and the content loss is less.

The invention relates to a CaCO3 vitamin D3 preparation and a preparation method thereof. The CaCO3 vitamin D3 preparation is mainly prepared from coated pills, wherein the coated pill includes a pillcore, a medicine coating layer and a protective coating layer; the medicine coating layer and the protective coating layer successively coat the pill core. The pill core includes: CaCO3, a disintegrating agent, filler and a binder; the medicine coating layer includes: vitamin D3 and a binder; the protective coating layer is mainly prepared from coating powder. By dispersing the CaCO3 in the pillcore, containing the disintegrating agent and filler, of the coated pill and dispersing the vitamin D3 in the medicine coating layer coating the pill core, and binding the pill core with the medicinecoating layer through the binder and coating the pill with the protective coating layer, a problem of degradability of vitamin D3 is avoided, and uniformity of the CaCO3 and vitamin D3 is increased and stability of the vitamin D3 is improved.

The invention belongs to the field of medicine, and particularly relates to a pharmaceutical composition for treating depression and a preparation method thereof. The preparation is an oral solid preparation and contains an active component with general formula of (S)-1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofuran carbonitrile oxalate (Escitalopram oxalate), microcrystalline cellulose and a compressible excipient; and the preparation has the characteristic of quick dissolution and is of great significance to the treatment of depression.

The invention provides naproxen and esomeprazole magnesium compound enteric coated tablets, which are composed of an active component and a pharmaceutical adjuvant. The active component comprises (1) naproxen enteric pellets and (2) esomeprazole magnesium quick-release particles. Each tablet comprises 375-500 mg of naproxen and 20 mg of esomeprazole magnesium based on esomeprazole per single dosage. The releasing degree of the compound enteric coated tablets is measured, and the result shows that the releasing degree is more than 80%, and reaches 85-90%. In an acceleration condition, compared with enteric coated tablets placed for zero month, enteric coated tablets placed for three months have no obvious change in property, releasing degree, content, and related substances and are stable in quality. According to a preparation method of the naproxen and esomeprazole magnesium compound enteric coated tablets, the content of esomeprazole magnesium is easy to control, and the size of prepared naproxen enteric pellets is close to that of the esomeprazole magnesium quick-release particles, so that the naproxen enteric pellets and esomeprazole magnesium quick-release particles are easy to be uniformly mixed. The content uniformity of pressed tablets meets requirements, and the preparation method is suitable for massive industrial production.

The invention provides an indapamide tablet. The tablet is composed of a tablet core and a film coating layer, wherein the tablet core is prepared from the following raw materials in parts by weight of 20-30 parts of indapamide, 600-800 parts of a filler, 100-300 parts of an adhesive, 8-50 parts of a lubricant and 2-25 parts of a glidant; and the mass of the film coating layer is 2-5% of the massof the tablet core. A preparation method comprises the following steps of pretreatment of raw materials and auxiliary materials; weighing and proportioning; dry powder mixing; dry granulation; total mixing; tabletting; and coating. According to the invention, dry granulation is adopted, the operation process is simple, the intra-batch and inter-batch difference is small, the particle size distribution of powder is uniform and stable, and the tablet weight difference and the tablet hardness in the tabletting process are easy to control; water or an organic solvent does not need to be added, andhigh-temperature drying is not needed, so that damage to main active ingredients is small; the dissolution of the indapamide tablet is consistent with that of an original drug; and according to the indapamide tablet prepared by the invention, API distribution is more uniform, and a burst release phenomenon does not easily occur during release.

The invention relates to a clinorhomboidal adefovir dipivoxil preparation. The clinorhomboidal adefovir dipivoxil preparation is characterized in that each unit of the clinorhomboidal adefovir dipivoxil preparation comprises 15 to 25mg of clinorhomboidal adefovir dipivoxil and a pharmaceutically acceptable carrier. The invention also relates to a preparation method for the preparation. The invention further relates to the application of the clinorhomboidal adefovir dipivoxil preparation to preparation of a medicine for relieving hepatitis symptoms which are caused by hepatitis B virus. The high-dose clinorhomboidal adefovir dipivoxil preparation has the advantages of high safety, quick hepatitis B virus resistance response, high curative effect, ideal comprehensive treatment effect, and the like.

Provide a new preparation method of calamine nitrofurazone pharmaceutical composition, especially the new preparation method of calamine nitrofurazone lotion, the raw materials of described calamine nitrofurazone lotion include calamine, zinc oxide, nitrofurazone, glycerin , sodium carboxymethylcellulose, purified water, characterized in that the method comprises first mixing nitrofurazone, at least a part of sodium carboxymethylcellulose and at least a part of water, and then mixing with the remaining components in the composition A step of. The calamine nitrofurazone lotion prepared by the new preparation method of the invention has the advantages of small sedimentation volume ratio, good uniformity, stable quality, and favorable transdermal absorption.

The invention discloses a preparation method of an instant seabuckthorn-tremella fuciformis solid beverage with lung-clearing effect. The seabuckthorn-tremella fuciformis solid beverage is prepared byscientific and reasonable proportion cooperation of a seabuckthorn fruit water-soluble extract, a tremella fuciformis water-soluble extract and other component part groups. The seabuckthorn-tremellafuciformis solid beverage has the advantages of being convenient to carry and easy to eat, has good lung-clearing effect, has the inhibiting effect caused by antagonism of haze, has the effects of clearing lung and relieving cough, can alleviate cough, excessive phlegm, chest tightness and many other symptoms caused by haze and dust, and can protect eyes.

The invention discloses a medicine containing amlodipine besylate and lisinopril dehydrate and a preparation method thereof. Per unit of the preparation is composed of, by weight, 2.5-10 parts of amlodipine besylate, 5-20 parts of lisinopril, 50-200 parts of a filler, 2-10 parts of a disintegrating agent and 0.5-2 parts of a lubricant. A preparation method of the medicine comprises the following steps: mixing: mixing the raw materials and auxiliary materials by an equivalent incremental mode; and tabletting: carrying out direct powder compression on the mixture obtained by the mixing. An amlodipine besylate-lisinopril tablet prepared from the above medicine by the above technology has the following advantages: use of auxiliary materials such as an adhesive, etc. is omitted in comparison with the prior art; the formula is simple; and safety is greatly raised; raw materials and auxiliary materials are mixed by the equivalent incremental mode in the preparation technology so as to ensure content uniformity of the medicine; and steps of granulation, drying and size stabilization, etc. are omitted, the technology is easy to operate, production efficiency is high, and the technology is very suitable for industrial production.

A crystal form of Valbenazine di-p-toluenesulfonate and its preparation method, a pharmaceutical composition containing the crystal form, and the use of the crystal form in the preparation of vesicular monoamine transporter 2 inhibitors and pharmaceutical preparations for treating tardive dyskinesia use in .

The invention discloses a compound liquorice tablet capable of being prepared by a dry powder direct compression process and a preparation method of the compound liquorice tablet. The preparation method comprises the following steps: weighing, primarily mixing, sieving, dissolving and adsorbing, premixing, totally mixing, tabletting and packaging. By controlling the average particle size of the primary mixture (the mixture of the licorice extract, the poppy fruit extract powder and the sodium benzoate), the appearance of the preparation is fundamentally ensured; by screening and selecting a novel auxiliary material polyvinylpyrrolidone, the problems of compressibility and dissolution rate are solved; by using silicon dioxide, the problems of adsorption and stability of volatile oil are solved, and the flowability and compressibility of particles are improved; by using a direct tabletting method, the process is simplified, the efficiency is improved, the content of volatile oil in a finished product is increased, the curative effect is improved, and the quality of the compound liquorice tablet is integrally improved.