161 results about "Nimodipine" patented technology

A modified release dosage product (5) comprises a plurality of minicapsules or minispheres (1, 2) containing nimodipine, and a plurality of minicapsules or minispheres (3), (4) containing tacrolimus. There are uncoated minicapsules or minispheres (1) encapsulating micronized nimodipine for immediate release and a controlled release polymer coated minicapsule or minisphere (2) encapsulating micronized nimodipine for delayed, sustained, controlled or targeted release. There are uncoated seamless minicapsules (3), the core of which comprises tacrolimus lipid-based formulation for immediate release and a controlled release polymer coated seamless minicapsule (4), the core of which comprises tacrolimus lipid-based formulation for delayed, sustained, controlled release or targeted release. The final dosage form may be a hard gelatin capsule (5).

The invention discloses a new nimodiping drug composition and making method, which is made of nimodiping, sorbitol or dehydration sorbitol fatty acid simple lipid surface activator, benign solvent of nimodiping, auxiliary solubilizer and injecting water to form the concentrated solution of injection or oral agent. The invention has big density, good stability, low findings and simple making technique, which can't induce damage for brain tissue due to cerebrovascular spasm.

The invention provides a nimodipine lipid microsphere injection, which is prepared from the following components in percentage by weight: 0.08 percent of nimodipine, 0.5 to 2.3 percent of lecithin for injection, 2 to 8 percent of soybean oil for injection, 2 to 8 percent of medium chain fatty acid for injection, 1 to 3 percent of glycerin, 0.1 to 0.2 percent of tween-80, 0.03 to 0.05 percent of sodium oleic acid, and the balance being water for injection. The preparation method comprises steps of preparation of an oil phase, preparation of water phase, preparation of colostrum, homogenization and canning. In the nimodipine lipid microsphere injection, the soybean oil for injection and the medium chain fatty acid for injection are used to prepare the oil phase, the nimodipine is a fat soluble drug and can be better dissolved in the oil phase, the lipid microsphere in which the soybean oil for injection is the main component has solvent characteristics, is non-toxic, and can guide the fat soluble drugs to be dissolved in emulsion particles and perform the metabolism along with lipid oil drops and slowly release, thereby maintaining the effective blood concentration, lowering toxic and side effects of the drugs, increasing the solubility and stability of the nimodipine drug, improving the drug-loading rate and reducing the hydrolysis of the drugs.

A composite injection of nimodipine in the form of liquid injection or freeze dried powder is prepared from nimodipine and propanediol and tween kind of surfactant. Its advantage is high solubility. Its preparing process is also disclosed.

The invention discloses a nimodipine micelle injection and a preparation method thereof. The nimodipine micelle injection is prepared by using active ingredients, i.e. nimodipine and phospholipid/bile salt. According to the nimodipine micelle injection disclosed by the invention, the solubility of the nimodipine is greatly increased, and no crystal precipitation exists when the nimodipine micelle injection is diluted; the biocompatibility of the phospholipid/bile salt is good, and organic solvents with great toxic side effects, such as ethyl alcohol, propylene glycol and the like, are not needed to for solubilizing so that the toxicity of the nimodipine micelle injection is lowered, the vascular stimulation is little, and the adverse reaction of the nimodipine micelle injection is reduced; and the nimodipine micelle injection can be directly used for intravenous injection and can also be used for instilling after the nimodipine micelle injection is diluted to various degrees, and thus, the clinical administration is greatly facilitated.

The invention belongs to the technical field of pharmaceutical preparations, and particularly relates to a medicament microsphere and a preparation method thereof. The medicament microsphere comprises medicinal materials, a high polymer material and a surfactant, wherein the ratio of the medicament to the high polymer material is 1:(1-3); the medicament preferably is celecoxib, ketoprofen, dipyridamole and nimodipine. The medicament microsphere is prepared by adopting an O/W emulsified solvent diffusion-volatilization method. The O/W emulsified solvent diffusion-volatilization method comprises the following steps: respectively weighing the medicinal materials, the high polymer material and a release regulator according to the prescription amount, and then adding the weighted materials to an organic solvent; ultrasonically or mechanically stirring and dissolving as a disperse phase; taking a surfactant solution as a continuous phase; warming and stirring after low-temperature emulsification under an agitation state, so as to remove an organic solvent; and then carrying out solid separation, washing by distilled water, and drying, so as to obtain the medicament microsphere. Thus, the prepared microsphere is high in encapsulation efficiency and high in yield.

The invention belongs to an oral Chinese herbal preparation for treating post-traumatic brain syndrome, and the oral Chinese herbal preparation is a human medicinal product. The preparation is prepared from the following Chinese herbs in parts by weight: 10+/-2 parts of Astragalus mongholicus, 10+/-2 parts of American ginseng, 10+/-2 parts of Angelica sinensis, 10+/-2 parts of medlar, 10+/-2 parts of the root of red-rooted salvia, 10+/-2 parts of ligusticum wallichii, 10+/-2 parts of root of common peony, 10+/-2 parts of peach kernel, 10+/-2 parts of Poria cocos, 10+/-2 parts of pericarpium citri reticulatae, 10+/-2 parts of plantain seed, 10+/-2 parts of tabasheer, 10+/-2 parts of rhizoma acori graminei, 10+/-2 parts of gastrodia elata, 10+/-2 parts of uncaria, 10+/-2 parts of spina date seed, 10+/-2 parts of amber powder and 6+/-1.2 parts of honey-fried licorice root. Clinical effect observation proves that the total effective rate of the oral Chinese herbal preparation to the oral traditional Chinese medicine preparation is 94.07%, and has better treatment effect (P<0.01) compared with Western medicines such as Rotundine, piracetam, oryzanol and nimodipine for treating post-traumatic brain syndrome. Moreover, the Chinese herbal preparation has no obvious toxic or side effect, and can be taken for a long time. The dose of the preparation is small, and effective medicinal components are easy to release, can be absorbed quickly and can fully play the pharmaceutical effect. The preparation is convenient to carry, easy to take and beneficial to large-scale production.

A release controlled nisoldipine tablet with single-layer osmotic pump for treating hypertension, angina pectoris, heart failure, etc contains nisoldipine, the release-controlling auxidiary chosen from sodium chloride, potassium chloride, glyceride behenate, etc, and other auxiliaries. Its advantages are sure and durable curative effect and low toxic by-effect.

A transdermal formulation of dihydropyridine calcium antagonists and specifically nifedipine, nimodipine and nitrendipine. The calcium antagonists are dispersed in a mixed liquid. The mixed liquid comprises varying mole fractions of cis-oleic acid and dimethylisosorbide dispersed in a polypropylene glycol base.

The invention discloses a nimodipine capsule with high dissolution and semi-solid composition as content and a preparation method thereof, and belongs to the pharmaceutical preparation field. The method comprises the following steps of mixing micronized nimodipine and a hydrophilic carrier, preparing into solid dispersion by melting extrusion method, cooling, pulverizing, mixing with semi-solid matrix, surfactant, melting point regulator under heating, and filling the content into hard capsule with a capsule filling machine. The invention combines the melting extrusion technique and semi-solid filling hard capsule technique, and after the prepared novel nimodipine capsule is administered into human body, the nimodipine quickly diffuses in molecular form and saturates metabolic enzymes, so as to improve bioavailability. The inventive nimodipine capsule solves the low dissolution and low utilization ratio problems of prior nimodipine preparation; and has the advantages of high dissolution, good stability, simple preparation method, and applicability to industrial production.

A self-microemulsified softcapsule of nimodipine or nitrendipine is prepared from nimodipine or nitrendipine, coemulsifier, self emulsifier, oil and antioxidizing agent through proportionally mixing nimodipine or nitrendipine, coemulsifier and self emulsifier, constant-temp oscillating, adding oil and antioxidizing agent, stirring, cooling, and shaping.

The invention relates to nimodipine lyophilization dry emulsion for injection. Before freeze-dried or reconstituted, according to percentage concentration per 1000 ml of fat emulsion, the lyophilization dry emulsion contains 0.001 percent to 0.2 percent of nimodipine, 0.5 percent to 30 percent of oiliness solvent, 0.1 percent to 5 percent of emulsifier, 5 percent to 40 percent of the freeze-drying protective agent and 0.1 percent to 10 percent of isotonic regulator. The invention also relates to a preparation method of nimodipine lyophilization dry emulsion. The invention has the advantages that ethanol is avoided to decrease irritation; the product can be mixed with any proportion of water for injection, sodium chloride solution, glucose solution, blank fat emulsion or other aqueous solution without phenomena of precipitation or crystallization; in addition, compared with the fat emulsion, the lyophilization dry emulsion is more helpful to improve the stability of nimodipine and excipient of the nimodipine, thereby lowering the requirements of production, transportation and storage conditions and prolonging the period of validity.

The present invention relates to pharmaceutical, and is especially new nano Nimoldipine liposome, its freeze dried precursor and preparation process. The nano Nimoldipine liposome consists of Nimoldipine, phosphatide, cholesterol, surfactant and antioxidant. The Nimoldipine liposome has stable quality, small average size and stable wrapping rate as high as 80%.

An oral disintegrating tablet of nimodipine is prepared from nimodipine, carrier, adsorbent, disintegrant, filler, soluble polybasic alcohol, and other auxiliaries.

The present invention relates to a nimodipine lipid nano granular composition and its preparation method. It can be made into injection, its composition includes 0.002-0.2% of nimodipine, 0.02-10% ofphospholipid and 0-2% of Poloxamer. Its preparation method includes the following steps: dissolving the above-mentioned materials in ethyl alcohol, adding injection water, making hydration for 1-2 hr. to obtain nimodipine lipid granular solution, high-pressure homogenizing for 10 min. under the condition of nitrogen gas flow, filtering with 0.2 micrometer micropore filtering membrane, adding injection water, filling, sealing, sterilizing so as to obtain the invented product.

The invention relates to the field of medical technology, more particularly to a nimodipine solid dispersoid and a preparation method thereof. The invention employs the nimodipine as an active ingredient and adds a macromolecular carrier material and an antisticking agent to prepare the nimodipine solid dispersoid; and the feeding ratio of the nimodipine, the macromolecular carrier material and the antisticking agent is 1:0.2-10:0.2-10. The nimodipine solid dispersoid is prepared by a melting method, a coprecipitation method, a solvent dispersion method, a solvent melting method or a grinding method respectively. The invention, by preparing the solid dispersoid with the nimodipine and a small amount of carrier material, significantly increases the equilibrium solubility and the degree of in vitro dissolution thereof and prominently enhances bioavailability, thus solving the problems of large dosage of the carrier of the solid dispersoid and severe aging; in addition the invention has the characteristics of small dosage of the carrier, rapid dissolution, high bioavailability and simple preparation method without the aging phenomenon.

The invention relates to nimodipine/ligustrazine double-load PLGA nanoparticles which are prepared through a method comprising the steps that: nimodipine, ligustrazine phosphate and a polylactic acid-glycolic acid copolymer are precisely weight according to a mass ratio of 1:5-20:40-60; the materials are dissolved into acetone, such that an organic phase is obtained; a PVA water solution with a mass concentration of 0.5-1.0% is adopted as an aqueous phase; under stirring, the organic phase is slowly dropped into the aqueous phase; when dropping is finished, the mixture is continued to be stirred for 2-4h under a constant temperature of 40-50 DEG C, such that the organic solvent is volatilized; centrifugation is carried out; a sediment is washed 2-3 timed by using distilled water, and is lyophilized, such that the nimodipine/ligustrazine double-loading PLGA nanoparticles are obtained. According to the invention, PLGA is adopted as a carrier material, and P-gp inhibitors TMP and NMD are applied in combination, such that NMD/TMP-PLGA-NPs are prepared. Therefore, defects of short drug half-life, easy generation of cytotoxicity, and the like of simple combination are avoided, a P-gp efflux effect is inhibited, and NMD distribution to tissues is promoted. Therefore, the nanoparticles have certain advantages over single-load nanoparticles.

The invention provides a nimodipine submicron emulsion injection and a preparation method thereof. The invention adopts nimodipine of effective dose as a drug and contains pharmaceutic adjuvant such as oil phase, an emulsifier, an auxiliary emulsifying agent, a pH regulator, and an iso-osmotic regulator; the nimodipine, the emulsifier; the auxiliary emulsifying agent and oil used for injection are weighed according to the formula amount, stirred and dissolved in a water bath, added with water used for injection and the iso-osmotic regulator and the like, and fully mixed and emulsified; the pH value of the solution is regulated and the solution is added with the water used for injection until the specified cubage; a high-pressure homogenizer is used for carrying out homogenization for a plurality of times until specified granularity is realized; a filtering membrane of 0.22 Mum is used for filtering and sterilizing; and nitrogenization, subpackaging and sterilization are carried out, and the nimodipine submicron emulsion injection is obtained. The nimodipine submicron emulsion injection of the invention does not contain auxiliary cosolvents, such as benzoic alcohol, polyethylene glycol, and the like, and has the advantages of high drug-load rate and packaging efficiency, slow release of drugs, good stability, and the like. The preparation process is simple, and a preparation which does not contain any organic solvent is provided, thus radically eliminating the defects of organic solvents, separating out no drugs, reducing the work load of medical care personnel and eliminating the psychological burden of the medical care personnel and patients; in addition, the nimodipine submicron emulsion injection has low cost and stable quality and is suitable for industrialized large scale production.

The invention belongs to the pharmaceutical technical field, and more specifically to a preparation method of Nimodipine. The preparation method includes an ammonia ester reaction and a cyclization reaction. In the ammonia ester reaction, after an ammonia-filling reaction ends, firstly an inorganic salt is added to remove water from the ammonia ester reaction, and then isopropyl 3-aminocrotonate is obtained through rectification. The cyclization reaction is carried out on the isopropyl 3-aminocrotonate and 2-(3-nitrobenzylidene)-acetoacetate-2-methoxyethyl ester, and a fatty alcohol is used as a reaction solvent. The preparation method of the Nimodipine has the advantages that the finished product yield is high, the primary yield reaches 85-89%, the quality is good, the solvent can be recycled and reused, and the raw material cost can be greatly reduced. Total impurities detected by HPLC can decrease to 0.1-0.3% from 0.4-1.0% in the original technology.

The present invention relates to the field of medicine preparation, and is especially delayed releasing nimodipine soft capsule and its preparation process. By means of adding gelatinizer into the soft capsule material and adding natural high molecular compound into the capsule content, the present invention forms skeleton structure in the soft capsule to reach the aim of delayed release.

The invention discloses a nimodipine solid dispersant and tablet and their preparation methods. The preparation method of the nimodipine solid dispersant comprises the following steps of blending nimodipine, polyvinylpyrrolidone and a volatile organic solvent to obtain a uniform mixed solution, uniformly spraying the mixed solution to a filler by a fluidized bed under the conditions of atomization pressure of 1.2-3.0bar, a liquid spraying rate of 3-12g/min, an inlet air temperature of 20-80 DEG C and an inlet air amount of 20-80m<3>/h, and carrying out granulation and drying, wherein a mass ratio of nimodipine to polyvinylpyrrolidone is 1: (1-6) and a mass ratio of nimodipine to the filler is 1: (2-15). The preparation method of the nimodipine solid tablet comprises carrying out raw material drying, adding accessory materials into the dried raw materials and carrying out tabletting. The preparation methods have simple processes. Preparation processes of the solid dispersant and tablet can be carried out simultaneously. The nimodipine solid dispersant particles have uniform particle size distribution, high solubility, good stability and high bioavailability.

A method and composition are provided for the treatment of an anorectal disorder and for controlling the pain associated therewith. The method comprises administering to a subject in need of such treatment therapeutically effective amounts of a calcium channel blocker either alone or together with a nitric oxide donor. Amlodipine, anipamil, barnidipine, benidipine, bepridil, darodipine, diltiazem, efonidipine, felodipine, isradipine, lacidipine, lercanidipine, lidoflazine, manidipine, mepirodipine, nicardipine, nifedipine, niludipine, nilvadipine, nimodipine, nisoldipine, nitrendipine, perhexiline, tiapamil, verapamil and pharmaceutically acceptable salts thereof, are suitable calcium channel blockers.