Slow release formulation
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United States of America Patent
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-
Nov 14, 1989
Grant Date -
N/A
app pub date -
Feb 9, 1987
filing date -
Feb 13, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A slow release formulation to be administered to humans or animals, comprising primary granules which contain an active ingredient and are in a secondary matrix of a water soluble/dispersible slow release material, the granules themselves comprising particles containing the active ingredients and in a primary matrix of a water soluble/dispersible slow release material. Optionally the formulation comprises a binder phase of a water insoluble slow release material having embedded therein secondary granules comprising the secondary matrix containing the primary matrix granules. The water soluble/dispersible material may be a polysaccharide and acacia and low viscosity methylcellulose are exemplified, as well as alginate and gelatine.
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