PROBLEM TO BE SOLVED: To provide an antitumor agent which can be used with improved safety.SOLUTION: Disclosed is a pharmaceutical composition whereby doxorubicin prodrugs are intermittently administered.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】より安全に使用できる抗腫瘍剤の提供【解決手段】ドキソルビシンプロドラッグが断続的に投与される製薬学的組成物が開示される。【選択図】なし