A patch preparation capable of inhibiting a deviation in pressure-sensitive adhesive properties of a pressure-sensitive adhesive layer even elapsing a long period of time until it is used after production and capable of keeping favorable pressure-sensitive adhesive properties is provided. The patch preparation includes a support and a pressure-sensitive adhesive layer formed on one surface of the support, and the pressure-sensitive adhesive layer includes: (A) a polymer prepared by copolymerizing monomer components including a hydroxyl group-containing monomer and an alkyl (meth)acrylate monomer； (B) a polymer prepared by copolymerizing monomer components including a methyl methacrylate monomer and a butyl methacrylate monomer； and (C) a basic drug, provided that bisoprolol and a salt thereof are excluded.
