COMPOSITIONS AND METHODS FOR PH TARGETED DRUG DELIVERY
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United States of America Patent
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app pub date -
Mar 20, 2009
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Sep 22, 2006
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Abstract
The invention provides compositions and methods for the targeted, in particular, pH targeted, delivery of pharmaceutically active agents in mammals. The compositions comprise pH sensitive diblock copolymers, which permit the release of the pharmaceutically active agent when exposed to an environment having a particular pH. The compositions are particularly useful for the oral delivery of water insoluble pharmaceutically active agents.
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