Therapeutical system for transdermal delivery of levonorgestrel
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United States of America Patent
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Apr 29, 2003
Grant Date -
N/A
app pub date -
Mar 9, 2000
filing date -
Jul 4, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A stable therapeutical transdermal system for the transcutaneous delivery of levonorgestrel, alone or together with other sex steroid hormones, over a long time period is disclosed. A method of producing the transdermal system that avoids the use of solvents and avoids degradation of the steroid hormones also is disclosed.
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