The present invention provides a transdermal patch comprising: a drug-containing layer comprising (R)-dihydroetorphine, or a salt or a hydrate thereof, and a poly(meth)acrylate; and a backing layer.本發明提供一種經皮貼片,其包含:含藥物層,該含藥物層包含(R)-二氫埃托啡((R)-dihydroetorphine)或其鹽或水合物及聚(甲基)丙烯酸酯;及背襯層。