The present invention provides a patch preparation that has an extremely low moisture permeability, has a sufficient ODT effect, is excellent in drug releasability, and has a preferred handleability. The patch preparation of the present invention includes a support; and a pressure-sensitive adhesive layer containing an adherent polymer and a drug on one surface of the support, wherein: the support has a polyester base layer, an inorganic oxide layer, and a polyester nonwoven fabric layer in the stated order; the polyester base layer has a thickness of 1.0 μm to 16 μm; and the pressure-sensitive adhesive layer is laminated on the polyester base layer.