External preparation for application to the skin containing lidocaine
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United States of America Patent
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Oct 27, 1998
Issued Date -
N/A
app pub date -
Jun 10, 1994
filing date -
Mar 30, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
An external preparation for application to the skin containing lidocaine which comprises a drug-retaining layer placed on a support, wherein said drug-retaining layer comprises an adhesive gel base and 1 to 10% by weight of lidocaine, said base comprising a water-soluble high molecular weight substance, water and a water-retaining agent, which can release the active lidocaine gradually and constantly so that lidocaine is transdermally absorbed for a long period of time.
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