Controlled release pharmaceutical preparation and method for...

Details Controlled release pharmaceutical preparation and method for... Controlled release pharmaceutical preparation and method for...

A - Human Necessities

61

K

167/164

A61K 9/32 (2006.01) A61K 9/28 (2006.01) A61K 9/36 (2006.01) A61K 9/50 (2006.01) A61K 9/52 (2006.01)

Patent

CA 1339078

Disclosed is a controlled release pharmaceutical preparation, comprising: a core containing a pharmaceutically active ingredient, and a porous film of a hydrophobic polymeric substance or a hydrophobic polymeric substance and a hydrophilic polymeric substance, the core being coated with the porous film. Disclosed is also a method for producing the preparation. The controlled release pharmaceutical preparation of this invention possesses a desired dissolution rate by controlling the porosity of the porous film.

595401

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