Transdermal systems containing multilayer adhesive matrices to modify drug delivery
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United States of America Patent
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Dec 8, 2015
Grant Date -
Jun 4, 2009
app pub date -
Nov 17, 2008
filing date -
Mar 9, 2004
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Abstract
A transdermal drug-containing dosage unit comprises: a backing layer substantially impervious to the drug to be delivered transdermally; a first polymeric adhesive matrix, in contact with the backing layer, having dispersed therein the drug and having a first delivery profile of the drug; a second polymeric adhesive matrix, in contact with said first polymeric adhesive matrix, having dispersed therein the drug and having a second delivery profile of the drug, wherein said second delivery profile is different from said first delivery profile; and a release liner in contact with the second polymeric adhesive matrix.
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