SUSTAINED RELEASE COMPOSITION OF THERAPUTIC AGENT
First Claim
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1. A sustained release composition for oral administration comprising:
- a. a graft copolymer which exhibits pH dependent behavior having the formula 1
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Abstract
A pH dependent drug delivery system comprising a pH sensitive graft copolymer, a therapeutically active agent and other pharmaceutically acceptable ingredients. More specifically, a composition which is capable of suppressing the drug release in the acidic pH prevalent in the stomach and releasing the drug over an extended period of time at pH prevalent in the intestinal region.
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Citations
27 Claims
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1. A sustained release composition for oral administration comprising:
a. a graft copolymer which exhibits pH dependent behavior having the formula 1 - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
Specification