61 results about "Divalproex Sodium" patented technology

The pharmaceutical composition of the present invention comprises a carbostyril derivative which is a dopamine-sero-tonin system stabilizer and a mood stabilizer in a pharmaceutically acceptable carrier. The carbostyril derivative may be aripiprazole or a metabolite thereof. The mood stabilizer may include but is not limited to lithium, valproic acid, divalproex sodium, carbamaza-pine, oxcarbamazapine, zonisamide, lamotragine, topiramate, gabapentin, levetiracetam or clonazepam. These compositions are used to treat patients with mood disorders, particularly bipolar disorder with or without psychotic features, mania or mixed episodes. Methods are provided for separate administration of a carbostyril derivative and a mood stabilizer to a patient with a mood disorder.

A process for preparing divalproex sodium tablets is provided. The process comprises preparing a neutralized divalproex sodium solution by combining divalproex sodium, having a sodium valproate and a valproic acid moiety, with an aqueous solvent and a base, e.g., sodium hydroxide, the base being in sufficient amount to ensure neutralization of the valproic acid moiety of the divalproex sodium. The neutralized divalproex sodium solution is sprayed onto a pharmaceutically acceptable carrier, and processed to obtain divalproex sodium tablets.

The present invention is directed to sustained release oral dosage forms comprising neutralized divalproex sodium, methods of manufacturing the dosage forms, and methods of treatment with the dosage forms.

A controlled release tablet formulation which permits once daily dosing in the treatment of epilepsy comprises from about 50 weight percent to about 55 weight percent of an active ingredient selected from the group consisting of valproic acid, a pharmaceutically acceptable salt or ester of valproic acid, divalproex sodium, and valpromide; from about 20 weight percent to about 40 weight percent hydroxypropyl methylcellulose; from about 5 weight percent to about 15 weight percent lactose, from about 4 weight percent to about 6 weight percent microcrystalline cellulose, and from about 1 weight percent to about 5 weight percent silicon dioxide having an average particle size ranging between about 1 micron and about 10 microns; all weight percentages based upon the total weight of the tablet dosage form. Also disclosed are pre-tableting granular formulations, methods of making the granular formulations and tablets, and a method of treating epilepsy employing the controlled release tablet formulations of the invention.

The invention belongs to the field of medicinal preparations, and particularly relates to divalproex sodium sustained release tablets and a preparation method thereof. The sustained release table comprises divalproex sodium, a retarding agent, a diluent, a disintegrant, a binder, a pH regulating agent, a lubricant, an antiadherent and the like.

The invention relates to a medicine composition containing divalproex sodium, which can be applied to patients safely, not only can improve the wettability and the flowability of the divalproex sodium, but also can improve the absorptivity of the divalproex sodium in gastrointestinal tracts. Particularly, the invention relates to a medicine composition containing amorphous divalproex sodium and betacyclodextrin. The preparation method of the medicine composition comprises the following steps: grinding, drying and pulverizing the divalproex sodium and the betacyclodextrin to obtain fine powder of 80-100 meshes; mixing with proper assistant materials and making into granules, and then tabletting and coating to obtain the medicine composition. The divalproex sodium medicine composition not only can improve release in vitro to a greater degree, thereby improving bioavailability, but can effectively treat epilepsia and vesania and prevent cephalagra; in addition, the divalproex sodium medicine composition can be taken orally and conveniently, can cover odor, and can be disintegrated and absorbed quickly and carried conveniently.

The present invention relates to a sustained release preparation comprising valproic acid and the pharmaceutical acceptable salt, ester or amide, or divalproex sodium, and a preparation method of the sustained release preparation.

The invention provides a method for preparing a divalproex sodium-containing sustained-release tablet for treating epilepsy. The sustained-release tablet contains divalproex sodium, a sustained-release material, a binder and a lubricant. The preparation method comprises the following steps of: mixing the divalproex sodium and the sustained-release material to obtain a mixture, adding the binder for wet granulation, drying, granulating, adding into other uniformly mixed auxiliary materials, and tabletting to obtain the divalproex sodium-containing sustained-release tablet. The sustained-release tablet can be sustainedly released for 24 hours, and is good in appearance, stable in performance and convenient to take.

The present invention relates to an extended release pharmaceutical composition comprising valproic acid, a pharmaceutically acceptable salt, ester, or amide thereof or divalproex sodium.

The present invention is directed to sustained release neutralized divalproex sodium oral dosage forms, processes for preparing the same, and methods of treatment therewith.

The present invention provides a controlled release dosage formulation comprising a) about 40% to about 80% of a valproic acid compound such as Divalproex Sodium and b) at least two, preferably hydrophilic, polymers each in an amount of less than about 20% of the dosage weight.

The present invention is directed to an aqueous process for granulating valproate compounds, in which the pH of the granulation solution is maintained at a pH of 5 or below. The invention is also directed to dosage forms in which the residual content of organic solvents is reduced to a level of 0.2 w/w % or less.

Pharmaceutical compositions of hepatotoxic compounds are provided in which the hepatotoxicity of the compounds is mitigated by including quantities of nicotinamide and methionine in the composition. Folic acid also can be included to further mitigate the hepatotoxic effects. The hepatotoxic compounds can include acetaminophen, methotrexate, atorvastatin, simvastatin, niacin, flucanozole, divalproex sodium, and valproic acid.

A controlled release formulation comprising less than about 40% of anti-epileptic drug, about 20% to about 50% of rate controlling polymer and silica having a particle size less than about 1 micron and specific surface area not less than 70 m²/g, all weight percentages are based upon the total weight of the dosage form, manufactured under normal atmospheric conditions.

The invention discloses stabilized divalproex sodium coated granules containing cores of divalproex sodium crystal granules and coatings made of coating material. The invention also discloses a preparation method of the coated granules and a solid preparation containing the divalproex sodium coated granules. The divalproex sodium coated granules are characterized in that: no caking occurs after long-term storage, and preparations are easily prepared by using the granules.

The medicine for treating depression and other mental disturb diseases is prepared with chlorimipramine, sulpiride, sodium valproate, borneol and Chinese herbal medicine extractum prepared with nutagrass flatsedge rhizome, arisaema with bile, wild jujube seed and other Chinese medicinal materials. The medicine consists of chemically synthetic medicine and Chinese herbal medicine component, and has synergistic treating effect, less toxic side effect, and good patient's compliance.

A first aspect of the invention relates to a combination comprising roscovitine, or a pharmaceutically acceptable salt thereof, and a HDAC inhibitor selected from sodium butyrate, or a prodrug thereof, suberoylanilide hydroxamic acid (SAHA), sodium valproate and trichostatin A (TSA). A second aspect of the invention relates to a pharmaceutical product comprising roscovitine, or a pharmaceutically acceptable salt thereof, and a HDAC inhibitor selected from sodium butyrate, or a prodrug thereof, suberoylanilide hydroxamic acid (SAHA), sodium valproate and trichostatin A (TSA) as a combined preparation for simultaneous, sequential or separate use in therapy. A third aspect of the invention relates to a method for treating a proliferative disorder, said method comprising simultaneously, sequentially or separately administering roscovitine, or a pharmaceutically acceptable salt thereof, and a HDAC inhibitor selected from sodium butyrate, or a prodrug thereof, suberoylanilide hydroxamic acid (SAHA), sodium valproate and trichostatin A (TSA) to a subject.

The invention provides a valproate semisodium tablet and its preparation method. The common valproate semisodium tablet comprises 50-67wt% of valproate semisodium, 25-35wt% of a microcrystalline cellulose, 5-9wt% of lactose, 1-3wt% of sodium carboxymethyl starch, 0.2-2wt% of magnesium stearate, and 1-10wt% of silica and/or talcum powder. The valproate semisodium tablet has the advantages of stable quality, no fractured, cracked or crushed tablets, and realization of the enteric-coated tablet release degree according with requirements of Chinese Pharmacopoeia 2005. The preparation method obviously overcomes the disadvantages comprising bad particle fluidity, sticking, tablet breaking and tablet appearance disqualification in present production technologies, has no special requirements on the production environment, enables the qualification rate of products to reach above 95%, and is suitable for large-scale industrialized production.

The subject provides a sustained release tablet comprising the following components: a) a uniform admixture of an active ingredient selected from the group consisting of valproic sodium acid, a pharmaceutically acceptable salt or ester of valproic acid, divalproex sodium, valpromide and a compound having the structure: wherein R1, R2, and R3 are independently the same or different and are hydrogen, a C1-C6 alkyl group, an aralkyl group, or an aryl group, and n is an integer which is greater than or equal to 0 and less than or equal to 3; and a binder, and b) a hydroxypropylmethyl cellulose, a process for manufacturing the tablet and a method of treating neuropathic pain, epilepsy, mania in bipolar disorder, a headache disorder, pain or of effecting pain prophylaxis in a subject.

The invention discloses a pharmaceutical composition for treating intractable epilepsy and application thereof. The active components of the pharmaceutical composition comprise sodium valproate or divalproex sodium and ethambutol or medicinal salt thereof. The pharmaceutical composition has the advantages that the fact that low-dose ethambutol hydrochloride has an anti-epileptic effect is discovered for the first time, the ethambutol hydrochloride is combined with the sodium valproate or divalproex sodium to treat the intractable epilepsy, the pharmaceutical composition is evident in anti-epileptic effect, and the toxic and side effects of the pharmaceutical composition are lowered evidently.

The invention provides divalproex sodium sustained release pellets. The divalproex sodium sustained release pellets comprise medicine-containing pellets and coating layers, wherein the medicine-containing pellets are coated by the coating layers; the medicine-containing pellets comprise 250mg of divalproex sodium, 70mg of hollow pellet cores, 60-110mg of filling agent, 18-68mg of lubricating agent and 2-10mg of adhesive; the coating layers comprise 45-225mg of Eudragit NE30D and 7-68mg of talcum powder. A preparation method of the divalproex sodium sustained release pellets comprises the following processes: 1. material preparation; 2. mixing; 3. preparation of the adhesive; 4. preparation of the pellets; 5. preparation of a coating agent; 6. coating; 7. filling; 8. aluminium-plastic packaging and preparation of finished products. The divalproex sodium sustained release pellets used for treating epilepsy and mania and the preparation method have the beneficial effects that as the two kinds of advanced technologies, namely novel sustained release preparations and pellet preparations, are adopted, the divalproex sodium sustained release pellets have stable treatment effects and higher bioavailability and have the advantages of good medicine stability, convenience in packaging, transportation and storage, and the like; the preparation method is simple and practicable and is suitable for industrial production.

The invention relates to compound sodium valproate and a preparation process thereof. The sodium valproate is prepared by raw materials including sodium valproate 0.3 part, salvia miltiorrhiza 30 parts, pepper 25 parts, rhizoma nardostachyos 20 parts, gastrodia elata 12 parts and uncaria 10 parts by weight, and the sodium valproate is prepared into capsules, tablets, particles and other drug forms after pharmaceutical excipients such as starch or edible cellulose are added according to a common pharmacy method. A compound sodium valproate drug composition treats both principal and secondary aspect of epilepsia disease, is non-toxic harmless and free of side effect to human body, low in price, simple and convenient to manufacture, and has wide application prospect.

The invention provides a sodium valproate injection. The sodium valproate injection is composed of sodium valproate, a stabilizing agent, a pH regulating agent and water for injection, wherein EDTA (ethylene diamine tetraacetic acid)-2NaCa serves as the stabilizing agent. By adoption of the EDTA-2NaCa serving as the stabilizing agent, stability of the sodium valproate injection in preparation and storage is evidently superior to that of sodium valproate injections adopting other stabilizing agents, to be more specific, the sodium valproate injection in preparation and storage is small in pH value variation range, related substances are less increased, and active ingredients are less reduced. Therefore, safety of the sodium valproate injection can be further improved by adoption of the EDTA-2NaCa serving as the stabilizing agent.

The invention discloses a divalproex sodium sustained release tablet. A process comprises the following steps: S1, preparing an auxiliary soft material; and S2, preparing a medicine-containing soft material, and preparing particles. The obtained particles are even and orderly in appearance, no sticky micelles are formed, the particles are moderate in size and have good mobility and compressibility, and the contents of the active ingredients are uniform, so that the quality of the medicine is stable and controllable. The divalproex sodium sustained release tablet prepared by adopting the particles has good in-vitro release, the release curve has high similarity with that of a post-market drug product, and the medicine can be effectively controlled to slowly release within 24h.

The invention relates to a divalproex sodium enteric-coated tablet core as well as a preparation method and an application thereof. The divalproex sodium enteric-coated tablet core is used for dry granulation. The divalproex sodium enteric-coated tablet core comprises the following components: 20-70 percent of divalproex sodium, 10-70 percent of filling agent, 0.5-20 percent of disintegrating agent, 5-20 percent of antisticking agent, 0.5-10 percent of talcum powder and 0.5-5 percent of magnesium stearate, wherein the antisticking agent is selected from one or a combination of silicon dioxide, superfine silica powder and silicon dioxide precipitate. The divalproex sodium enteric-coated tablet core prepared by using the preparation method is complete in release in vitro, higher in in-vitro dissolution speed and release rate and high in quality and has better safety and safety. The dry granulation method has the advantages of simple, convenient and feasible process, low cost, easiness in mass production, environmental friendliness and the like.