Oral sustained release pharmaceutical preparation

Details Oral sustained release pharmaceutical preparation Oral sustained release pharmaceutical preparation

1986-06-11

1988-10-11

Rose, Shep K.

Drug, bio-affecting and body treating compositions

Effervescent or pressurized fluid containing

Gas produced in situ by chemical reaction

424 81, 424487, 424488, A61K 946, A61K 922, A61K 926

Patent

active

047770333

ABSTRACT:
This invention is concerned with an oral sustained release pharmaceutical preparation which is prepared as a pharmaceutical preparation comprising lower alkyl ether of cellulose, polyacrylic acid or its pharmaceutically acceptable salt, and active drugs, or a pharmaceutical preparation comprising lower alkyl ether of cellulose, polyacrylic acid or its pharmaceutically acceptable salt, and active drugs together with a foaming agent, so that it may release the active drugs by such slow degrees in the stomach or the intestinal tract as to make it possible to provide an adequate supply of active drugs in enough concentration to display their therapeutic value for many hours.

REFERENCES:
patent: 4059686 (1977-11-01), Tanaka et al.
patent: 4226848 (1980-10-01), Nagai et al.
patent: 4292299 (1981-09-01), Suzuki et al.
patent: 4414198 (1983-11-01), Michaelson
patent: 4503031 (1985-03-01), Glassman
patent: 4517173 (1985-05-01), Kizawa et al.
patent: 4569837 (1986-02-01), Suzuki et al.
patent: 4572832 (1986-02-01), Kigasawa et al.
patent: 4680323 (1987-07-01), Lowey
patent: 4684516 (1987-08-01), Bhutani
Chemical Abstracts, vol. 87, No. 26, Dec. 26, 1977, p. 291, Ref. No. 206530c.

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