PROBLEM TO BE SOLVED: To provide an aqueous pharmaceutical formulation which can secure the stability and quality of olanzapine for a long term even in the state of olanzapine and water coexisting.SOLUTION: An aqueous pharmaceutical formulation comprises olanzapine and water. A pH at the time of preparation thereof is in the range of 7-10.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】オランザピンと水とが共存する状態であってもオランザピンの安定性・品質を長期間確保できる水性医薬製剤の提供。【解決手段】オランザピンと水を含み、調製時のpHが7~10の範囲内であることを特徴とする水性医薬製剤。【選択図】なし