Cryogel oral pharmaceutical composition containing therapeutic agent
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United States of America Patent
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Feb 22, 1994
Issued Date -
N/A
app pub date -
Jun 16, 1992
filing date -
Jan 16, 1992
priority date (Note) -
Expired
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Abstract
An oral pharmaceutical composition comprising a hydrophobic resin or ion exchange resin which has a therapeutic agent bound thereto forming an agent-resin complex is disclosed. The complex is coated with a water-permeable diffusion barrier of poly(vinyl alcohol) polymer cryogel.
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