| abstract |
A patch comprising an adhesive layer formed on one surface of a flexible support, wherein said adhesive layer containing a drug, an absorption enhancer and an adhesive comprising; (i) said drug is buprenorphine hydrochloride and/or buprenorphine, and (ii) said absorption enhancer is a mixture of polyoxyethylene sorbitan mono fatty acid ester having 6 to 20 of oxyethylene units and 12 to 18 of carbon number of fatty acid ester, and at least one selected from the group consisting of liquid higher fatty acid ester, 60 to 180 of molecular weight of liquid poly hydric alcohol, lactic acid and triacetin, and (iii) said adhesive is an acrylic-based adhesive. |