Slow-releasing granules and long acting mixed granules comprisin

Details Slow-releasing granules and long acting mixed granules comprisin Slow-releasing granules and long acting mixed granules comprisin

Filed on

1988-08-25

Date issued

1990-11-20

Examiner

Page, Thurman K.

Patent Class

Drug, bio-affecting and body treating compositions

SubClass

Preparations characterized by special physical form

SubSubClass

Particulate form

Other Related Categories

424458, 424459, 424462, 424468, 424480, 424482, 424495, 424497, A61K 958

Type

Patent

Status

active

Patent number

049718053

Description

ABSTRACT:
Slow-releasing granules which are characterized by coating the quick-releasing granules which comprise an active ingredient, polyvinyl pyrrolidone polymer and a disintegrator where the polymer distributes in high concentration on the surface area of the granules, with a polyacid enteric material to form a complex between the polyvinyl pyrrolidone polymer and the polyacid, and long lasting mixed granules which comprise the quick-releasing granules and the slow-releasing granules, thus showing increased bioavailability of the active ingredient and high stability sustained for a long period of time.

REFERENCES:
patent: 2410417 (1946-11-01), Andersen
patent: 4794001 (1988-12-01), Mehta et al.

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