It is an object of the present invention to provide an orally disintegrating tablet that has desirable oral disintegrability and excellent tablet hardness, a process for producing the same, and the like.The present invention provides an orally disintegrating tablet comprising:at least one diluent selected from D-mannitol, lactose, trehalose, xylitol, maltitol, and erythritol a drug a disintegrant andat least one binder selected form methacrylic acid copolymer S, methacrylic acid copolymer L, methacrylic acid-ethyl acrylate copolymer, ethyl acrylate-methyl methacrylate copolymer, and methyl methacrylate-butyl methacrylate-dimethylaminoethyl methacrylate copolymer.
