PROBLEM TO BE SOLVED: To provide means that prevents a liquid or semisolid composition comprising loxoprofen or a salt thereof from discoloring during storage at high temperature.SOLUTION: The present invention provides a pharmaceutical formulation in which: a liquid or semisolid composition comprising following components (A) and (B): (A) loxoprofen or a salt thereof (B) a cellulose is stored in a polyolefin resin-made container.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】ロキソプロフェン又はその塩を含有する液状又は半固形状の組成物の、高温保存時における変色を抑制する手段の提供。【解決手段】次の成分(A)及び(B):(A)ロキソプロフェン又はその塩;(B)セルロース類;を含有する液状又は半固形状の組成物が、ポリオレフィン系樹脂製容器に収容されてなる、医薬製剤。【選択図】なし