Controlled release pharmaceutical preparation and method for pro

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

1991-07-12

1993-10-19

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

424451, 424456, 424480, 424494, A61K 916

Patent

active

052543471

ABSTRACT:
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 same. The controlled release pharmaceutical preparation of this invention posseses a desired dissolution rate by controlling the porosity of the porous film.

REFERENCES:
patent: 4629619 (1986-12-01), Lindahl
patent: 4663147 (1987-05-01), DePrince
patent: 4666702 (1987-05-01), Junginger
patent: 4769027 (1988-09-01), Baker
patent: 4800087 (1989-01-01), Mehta
patent: 4832958 (1989-05-01), Baudier

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