CONTROLLED RELEASE FORMULATIONS USING INTELLIGENT POLYMERS
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United States of America Patent
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app pub date -
Dec 30, 2011
filing date -
Apr 21, 1997
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Abstract
A controlled release pharmaceutical composition comprises (a) topiramate or a pharmaceutically acceptable salt thereof, (b) a first intelligent polymer component; and (c) a second intelligent polymer component having opposite wettability characteristics to the first intelligent polymer component. The polymer components are effective for controlled release of the pharmaceutically active substance from the composition.
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