Medicament with a delayed release of active ingredient
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United States of America Patent
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-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Jun 29, 1987
filing date -
Feb 2, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In addition to the active ingredient, the capsules contain a nonionic surfactant consisting of a polyglycol ester or ether having hydrophilic and lipophilic portions, and an organic polymer which is capable of forming a free-flowing composition with the active ingredient and the surfactant. The essential point for the delay in release is the matching of the water-solubility of the active ingredient and the hydrophilic/lipophilic character (HLB value) of the surfactant as follows:
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