Method for the preparation of a theophylline sustained release p

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

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424468, 424480, 514826, A01N 4390, A01K 3152

Patent

active

050267094

ABSTRACT:
A method for the preparation of a sustained release pharmaceutical composition comprising forming a fluidized ring of said particles and contacting said particles maintained suspended in said ring with a liquid composition containing a pharmaceutically active material and an alkali-soluble material.

REFERENCES:
patent: 3109775 (1963-11-01), Shepard
patent: 4587118 (1986-05-01), Hsiao
patent: 4588366 (1986-05-01), Glatt
patent: 4663150 (1987-05-01), Panoz et al.

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