It has with the medicine layer which is laminated on the backing and the said backing, the sticking medicine where mass ratio with the polyisobutylene and the containing silicon polymer where medicine layer, huentaniru and at least consists of the chemical compound of 1 where it is chosen kinds and the polyisobutylene and the adhesive which contains with the containing silicon polymer from the group which consists of the salt which that pharmacy can be allowed in the adhesive is the 20:1 - the 7:3.支持体と、該支持体上に積層された薬物層とを備え、薬物層が、フェンタニル及びその薬学的に許容できる塩からなる群より選ばれる少なくとも1種の化合物と、ポリイソブチレンと、含ケイ素ポリマーとを含有する粘着剤からなり、粘着剤におけるポリイソブチレンと含ケイ素ポリマーとの質量比が20:1~7:3である貼付剤。
