Gastric retention-type sustained-release levodopa preparation

A - Human Necessities – 61 – K

Patent

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Details

A61K 31/198 (2006.01) A61K 47/10 (2006.01) A61K 47/12 (2006.01) A61K 47/14 (2006.01) A61K 47/26 (2006.01) A61K 47/32 (2006.01) A61K 47/34 (2006.01) A61K 47/36 (2006.01) A61K 47/38 (2006.01) A61K 47/42 (2006.01) A61P 25/16 (2006.01) A61P 43/00 (2006.01)

Patent

CA 2673485

The object is to maintain the sustained blood level of levodopa and to provide a levodopa preparation which enables the sustained release of levodopa in the stomach and has a satisfactory intragastric floating time, has a size that is easy to be administered, and can be produced industrially. Specifically disclosed is a levodopa intragastric floating preparation which comprises: a drug release layer comprising levodopa; and an intragastric floating layer showing a satisfactory floating property in the stomach which relies on it high mechanical strength and showing a good disintegrating property in the intestinal tract.

L'objectif est de maintenir un taux entretenu de lévodopa dans le sang et de proposer une préparation de lévodopa qui permet la libération entretenue du lévodopa dans l'estomac et possède un temps de flottement intragastrique satisfaisant, a une taille qui lui permet d'être facilement administrée, et peut être fabriquée industriellement. L'invention porte spécifiquement sur une préparation flottante intragastrique de lévodopa qui comprend : une couche de libération de médicament comprenant du lévodopa ; et une couche flottante intragastrique présentant une propriété flottante satisfaisante dans l'estomac qui repose sur sa haute résistance mécanique, et présentant une bonne propriété de désintégration dans le tractus intestinal.

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