Disclosed is a transdermally absorbable preparation which enables the administration of an anti-dementia agent for a prolonged period in a stable manner. More specifically, disclosed is a transdermally absorbable preparation comprising an anti-dementia agent for patch application on the skin. The transdermally absorbable preparation comprises at least an adhesive layer, an intermediate layer and a drug-containing layer from the side to be applied on the skin, wherein the drug-containing layer contains at least an anti-dementia agent, a polymeric compound having an amino group, a polyhydric alcohol, and at least one carboxylate ester, the intermediate layer is adapted to enable the controlled penetration of the anti-dementia agent through the skin, and the adhesive layer is adapted to enable the adhesion of the transdermally absorbable preparation onto the skin and has a permeability to the anti-dementia agent.
