Delivery of drugs to the lower gastrointestinal tract
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United States of America Patent
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Dec 15, 1998
Issued Date -
N/A
app pub date -
Sep 27, 1996
filing date -
Jul 29, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Diseases of the colon are treated by oral ingestion of a unit dosage form containing a plurality of porous microscopic beads, the pores containing an active agent or drug and plugged with a polysaccharide that is chemically degradable by colon-specific bacteria. The dosage form further contains a coating of an enteric material that remains intact until the dosage form reaches the colon.
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