External pharmaceutical composition containing tramadol
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United States of America Patent
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Issued Date -
Jul 31, 2008
app pub date -
Jan 29, 2008
filing date -
Jan 29, 2007
priority date (Note) -
Abandoned
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Abstract
An analgesic composition for external application for increasing the percutaneous permeability of tramadol or a pharmaceutically acceptable salt thereof and for achieving a quick pharmacological effect. The analgesic composition includes tramadol or a pharmaceutically acceptable salt thereof, a menthol substance and a pyrrolidone compound.
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