Controlled release formulation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Dec 20, 1988
Grant Date -
N/A
app pub date -
Jul 28, 1987
filing date -
Jul 28, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A controlled release pharmaceutical formulation is provided which releases a pharmaceutical of a basic character at a controlled rate regardless of the pH of the environment, which formulation includes a basic pharmaceutical, up to about 45% by weight of a pH dependent polymer which is a salt of alginic acid, such as sodium alginate, up to about 35% by weight of a pH-independent hydrocarbon gelling agent having a viscosity of up to about 100,000 centipoises in 2% solution at 20.degree. C., binder and excipients.
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