The present invention relates to a film-coating tablet composed of (a) a plain tablet comprising obeticholic acid or a pharmaceutically acceptable salt thereof and (b) a coating layer on the surface of the plain tablet, which comprises a film base material, but does not substantially comprise a plasticizer or does comprise at least one particular plasticizer, wherein an active ingredient has a good stability.本發明係關於一種有效成分之化學安定性優異之包膜錠,其具有(a)含有奧貝膽酸或其藥學上所允許之鹽之素錠及(b)該素錠之表面之包含膜基劑且實質上不含塑化劑或者包含至少1種特定塑化劑之被覆層。