To provide a transdermally absorbed preparation having excellent transdermal absorbability of 4-(2-methyl-1-imidazolyl)-2,2-diphenylbutylamide or a pharmaceutically acceptable salt thereof contained therein. [Solution] A transdermally absorbed preparation comprising a support and an acrylic adhesive agent layer that is formed on the surface of the support and contains 4-(2-methyl-1-imidazolyl)-2,2-diphenylbutylamide or a pharmaceutically acceptable salt thereof, wherein the acrylic adhesive agent layer additionally contains oleic acid and a carboxylic acid having 2-10 carbon atoms.本發明係提供一種對4-(2-甲基-1-咪唑基)-2,2-二苯基丁醯胺或其於藥學上認可之鹽，具有優異的經皮吸收性之經皮吸收型製劑。本發明之經皮吸收型製劑係具有支持體，以及形成於支持體表面上，含有4-(2-甲基-1-咪唑基)-2,2-二苯基丁醯胺或其於藥學上認可之鹽之丙烯酸系黏著劑層，丙烯酸系黏著劑層進而含有油酸以及碳數2~10之羧酸。
