An oral composition contains 3-{5-[4-(cyclopentyloxy)-2-hydroxybenzoyl]-2-[(3-hydroxy-1,2-benzisoxazol-6-yl)methoxy]phenyl}propionic acid or a salt thereof and polyvinylpyrrolidone is advantageous as an oral medication composition (1) which can be produced without requiring new manufacturing equipment； (2) which can be produced with simple steps； (3) which maintains stable solubility even with changes in the pH of the gastrointestinal tract and of which gastrointestinal tract absorption is improved.
