Colonic drug delivery formulation
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United States of America Patent
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May 5, 2015
Grant Date -
Oct 18, 2007
app pub date -
Apr 13, 2007
filing date -
Apr 13, 2006
priority date (Note) -
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Abstract
A delayed release coating comprising a mixture of a first material selected from starch; amylose; amylopectin; chitosan; chondroitin sulfate; cyclodextrin; dextran; pullulan; carrageenan; scleroglucan; chitin; curdulan and levan, and a second material which has a pH threshold at about pH 5 or above, is used to target release of a drug from a core to the intestine, particularly the colon.
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