| abstract |
(57) [Summary] [Structure] In a patch having a base layer containing eperisone, tolperisone, or a salt thereof on one surface of a support, the support is an ethylene / methyl acrylate copolymer film. An external patch for eperisone or tolperisone. [Effect] Good adhesiveness and usability, and the drug in the base layer migrates through the support during storage of the formulation and deposits on the surface on the opposite side of the base layer, which impairs commercialability. There is no danger of being damaged. |