Stabilized medicine-releasing compositions

A - Human Necessities – 61 – K

Patent

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Details

A61K 47/32 (2006.01) A61K 9/16 (2006.01) A61K 9/22 (2006.01) A61K 9/52 (2006.01) A61K 31/4704 (2006.01) A61K 31/4709 (2006.01) A61K 31/496 (2006.01) A61K 31/522 (2006.01) A61K 47/14 (2006.01) A61K 47/38 (2006.01) A61P 11/06 (2006.01)

Patent

CA 2445388

A medicinal composition which has excellent storage stability and, even through long-term storage, is less apt to change in the rate of release of the pharmacologically active substance contained therein. The medicinal composition is one obtained by dissolving or dispersing a pharmacologically active substance and a pH-independent water-insoluble polymer in a molten low- melting substance. It is produced by dissolving or dispersing the pharmacologically active substance in a molten mixture of the low-melting substance and the pH-independent water-insoluble polymer and spraying and cooling the resultant liquid.

L'invention concerne une composition de médicament présentant une stabilité élevée à l'entreposage, et qui même en cas d'entreposage prolongé présente une résistance améliorée aux modifications de la vitesse de libération du principe pharmacologique actif qu'il contient. On prépare cette composition pharmaceutique par dissolution ou dispersion d'un produit pharmacologiquement actif et d'un polymère indépendant du pH et insoluble à l'eau dans un produit point de fusion bas à l'état fondu. Le procédé de préparation consiste à dissoudre ou à disperser le produit pharmacologiquement actif dans un mélange composé du produit à point de fusion bas et du polymère insoluble à l'eau et indépendant du pH, et à pulvériser puis à refroidir le liquide résultant.

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