Sustained release formulation containing an ion-exchange resin
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United States of America Patent
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Jun 5, 1990
Issued Date -
N/A
app pub date -
Jul 21, 1988
filing date -
Aug 16, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sustained-release polymeric hydrogel dosage form useful for topical, systemic or transdermal administration of a medicinal agent comprising a cross-linked, polymerized hydrophilic polymer, an ion-exchange resin, a cross-linking agent, an optical hydrophobic polymer and said medicinal agent in a therapeutically effective amount.
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