It is possible to continuously administer ristigagmine, which is an effective ingredient for a long time, and to provide a dermal absorption type drug containing ristigagmine with low skin irritation.The transdermal absorption type pharmaceutical according to the present invention contains a mass%%, lifestigmine: 5% or more, 30% or less, rubber based adhesive: 10% or more, 60% or less, and a cohesive resin: 30% or more, 70% or less, the content of the lithostigmine is a (%), and the content of the rubber adhesive is b When the content of the pressure-sensitive resin is set to C (%), the following equations (1) and (2) are satisfied.A + C ≧ 55B / C ≦ 1.00長時間にわたって有効成分であるリバスチグミンを持続的に投与でき、且つ、皮膚刺激性の低いリバスチグミン含有経皮吸収型製剤を提供する。本発明の経皮吸収型製剤は、質量%で、リバスチグミン:5%以上、30%以下、ゴム系粘着剤:10%以上、60%以下、及び粘着付与樹脂:30%以上、70%以下を含有し、前記リバスチグミンの含有量をa(%)、前記ゴム系粘着剤の含有量をb(%)、前記粘着付与樹脂の含有量をc(%)としたとき、下記式(1)、(2)を満たす。 a+c≧55・・・(1) b/c≦1.00・・・(2)