Patent ID: 8734838

Claim:
A percutaneous absorption preparation which comprises: (a) one or more analgesic-antiinflammatory agents selected from the group consisting of methyl salicylate, L-menthol and dl-camphor, (b) polyisoprene, (c) a styrene/isoprene/styrene copolymer, and (d) solid polyisobutylene, wherein the preparation comprises (b), (c) and (d) in a proportion of (27-50)/(18-20)/(30-55) parts by weight respectively and 100 parts by weight in total relative to the total weight of (b), (c) and (d) and further contains a non-solid isobutylene polymer and a tackifier; wherein the amount of the non-solid isobutylene polymer is 10-20 parts by weight per 100 parts by weight relative to the total weight of (b), (c) and (d); and wherein the content of the tackifier is in a proportion of 40-60 parts by weight relative to the total weight of (b), (c) and (d), thereby exhibiting a removal resistance to water.