Semi-enteric drug delivery systems and methods for preparing sam

Details Semi-enteric drug delivery systems and methods for preparing sam Semi-enteric drug delivery systems and methods for preparing sam

1992-02-14

1992-12-01

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Tablets, lozenges, or pills

424 7824, 424472, 424440, 424441, 424480, 424494, 424495, 424497, A61K 932, A61K 958

Patent

active

051679647

ABSTRACT:
The present invention pertains to semi-enteric drug delivery systems which comprise (a) an inert core, (b) a first coating layer over the core comprising a medicament, and (c) a second coating layer over the first coating layer comprising a mixture of methacrylic acid copolymer, type C, and povidone present in a ratio by weight of from about 2:1 to about 24:1, respectively.

REFERENCES:
patent: 4263273 (1981-04-01), Appelgren et al.
patent: 4644031 (1987-02-01), Lehmann et al.
patent: 4800079 (1989-01-01), Boyer
patent: 4828840 (1989-05-01), Sakamoto et al.

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