Theophylline sustained release granule
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United States of America Patent
Stats
-
Apr 14, 1981
Grant Date -
N/A
app pub date -
Jan 2, 1980
filing date -
May 18, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A Theophylline sustained release granule comprises 10 to 45 wt. % of Theophylline, 30 to 60 wt. % of a metal salt of higher fatty acid and 0.5 to 10 wt. % of ethyl cellulose at a ratio of 1:1 to 1:3 by weight of Theophylline to said metal salt of higher fatty acid. The Theophylline sustained release granule is effective for maintaining a suitable concentration of Theophylline in blood for a long time.
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