PROBLEM TO BE SOLVED: To provide an intraorally quickly disintegrating tablet containing imidafenacin that exhibits excellent light stability and gives a small amount of decomposed products in a manufacturing process.SOLUTION: The intraorally quickly disintegrating tablet is obtained by coating, with a non-cellulosic coating agent, a granule obtained by granulating one or two or more selected from the group consisting of tocopherol, a tocopherol derivative and an acrylic polymer together with imidafenacin and compression-molding the granule.COPYRIGHT: (C)2011,JPO&INPIT【課題】光安定性に優れ、かつ、製造工程分解物の少ないイミダフェナシン含有口腔内速崩錠の提供。【解決手段】トコフェロール、トコフェロール誘導体及びアクリル系重合体からなる群より選ばれる1種又は2種以上をイミダフェナシンと共に造粒して得られる顆粒を、非セルロース系コーティング剤で被覆し、圧縮成型した口腔内速崩錠。【選択図】なし