BUPRENORPHINE TRANSDERMAL DELIVERY SYSTEM
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United States of America Patent
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Jan 24, 2017
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Jun 4, 2013
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Abstract
A transdermal therapeutic system for the transdermal administration of buprenorphine comprising a buprenorphine-containing self-adhesive layer structure having (A) a buprenorphine-impermeable backing layer, and (B) a buprenorphine-containing pressure-sensitive adhesive layer on the backing layer. The buprenorphine-containing adhesive layer comprises (a) at least one polymer-based pressure-sensitive adhesive, (b) an analgesically effective amount of buprenorphine base or a pharmaceutically acceptable salt thereof, (c) a viscosity-increasing substance in an amount of about 0.1% to about 8% of the buprenorphine-containing pressure-sensitive adhesive layer, and (d) a carboxylic acid selected from oleic acid, linoleic acid, linolenic acid, levulinic acid and mixtures thereof. The amount of the carboxylic acid is sufficient so that the analgesically effective amount of buprenorphine is solubilized in the carboxylic acid to form a mixture including the viscosity-increasing substance. This mixture forms dispersed deposits in the pressure-sensitive adhesive. The buprenorphine-containing pressure-sensitive adhesive layer is the skin contact layer.
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