Provided is an adhesive patch which offers excellent rivastigmine storage stability and increase the skin permeability of rivastigmine to such an extent that the amount of percutaneous absorption needed to treat Alzheimers disease is obtained. This adhesive skin patch is characterized in comprising: a support and an adhesive layer containing rivastigmine and a (meth)acrylic acid alkyl ester-based copolymer which does not contain any acrylic monomer component having a carboxy group, the adhesive layer being layered and integrated onto one side of the support.
