Expandable pharmaceutical forms
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United States of America Patent
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Jul 29, 1997
Grant Date -
N/A
app pub date -
Feb 21, 1995
filing date -
Feb 28, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to administration forms having an extended gastric residence time, in the preparation of which mixtures of polymers containing lactam groups and polymers containing carboxyl groups are used, and which are distinguished both by marked swelling properties and by high dimensional stability in the swollen state.
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