PROBLEM TO BE SOLVED: To provide a prescription and preparation of a stabilized intraorally disintegrating formulation in which bitter taste is reduced, the formulation containing active pharmaceutical ingredients (cetirizine hydrochloride, levocetirizine hydrochloride, and the like).SOLUTION: The invention provides an intraorally disintegrating formulation containing cetirizine hydrochloride or levocetirizine hydrochloride, polyols, and pH regulator, wherein the pH of the intraorally disintegrating formulation in 5% by weight of aqueous suspension or in 5% by weight of aqueous solution is 4-7.SELECTED DRAWING: None【課題】安定化され、苦味を抑えられた原薬（セチリジン塩酸塩、レボセチリジン塩酸塩等）を含有する口腔内崩壊製剤の処方および製法を提供する。【解決の手段】口腔内崩壊製剤は、セチリジン塩酸塩またはレボセチリジン塩酸塩と、ポリオール類と、ｐＨ調節剤とを含み、当該口腔内崩壊製剤を５重量％水懸濁液または５重量％水溶液にしたときのｐＨが４～７である。【選択図】なし
