Process for producing solid oral dosage forms with sustained release of active ingredient
First Claim
1. A process for producing an oral dosage form with sustained release of active ingredient, wherein the dosage form comprisesa) a formulated mixture of polyvinyl acetate and polyvinylpyrrolidone which acts as a binder and a matrix former, and wherein the polyvinylpyrrolidone has a molecular weight of from 20,000 to 1,000,000, and the polyvinylpyrrolidone is finely dispersed in the polyvinyl acetate,b) at least one active ingredient,c) optionally water-soluble polymers or low or high molecular weight lipophilic additives,d) and, optionally, excipients, wherein the process comprises granulating a mixture of a) to d) or a) to c) or a) and b) and d) or a) and b) by heating to a temperature of from 40°
- C. to 130°
C. in the absence of solvents.
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Accused Products
Abstract
The present invention relates to a process for producing solid oral dosage forms with sustained release of active ingredient, comprising at least one active ingredient, a preformulated mixture of polyvinyl acetate and polyvinylpyrrolidone, where appropriate, water-soluble polymers or lipophilic additives and, where appropriate, other conventional excipients, wherein this mixture or parts of this mixture are granulated by heating to from 40° C. to 130° C., and the granules are, after admixture with conventional excipients, subsequently tabletted.
32 Citations
17 Claims
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1. A process for producing an oral dosage form with sustained release of active ingredient, wherein the dosage form comprises
a) a formulated mixture of polyvinyl acetate and polyvinylpyrrolidone which acts as a binder and a matrix former, and wherein the polyvinylpyrrolidone has a molecular weight of from 20,000 to 1,000,000, and the polyvinylpyrrolidone is finely dispersed in the polyvinyl acetate, b) at least one active ingredient, c) optionally water-soluble polymers or low or high molecular weight lipophilic additives, d) and, optionally, excipients, wherein the process comprises granulating a mixture of a) to d) or a) to c) or a) and b) and d) or a) and b) by heating to a temperature of from 40° - C. to 130°
C. in the absence of solvents. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- C. to 130°
Specification