[Problem] To provide a transde-rmal absorption preparation exhibiting excellent transdermal absorbability for 4-(2-methyl-1-imidazolyl)-2,2-diphenylbutylamide or a pharmaceutically acceptable salt thereof. [Solution] A transdermal absorption preparation having a support, and a rubber-based adhesive 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, the rubber-based adhesive layer further containing oleic acid, capric acid and crotamiton.
