An orally disintegrating tablet comprising edoxaban, a pharmacologically acceptable salt thereof, or a solvate thereof is provided. An orally disintegrating tablet comprising (A) edoxaban, a pharmacologically acceptable salt thereof, or a solvate thereof, (B) an organic acid, (C) 0.1 to 2.0% by weight of a water-soluble polymer relative to the total weight of the tablet, and (D) a disintegrant.