PROBLEM TO BE SOLVED: To provide a composition for treating, suppressing or alleviating leukopenia (for example, neutropenia) and / or thrombocytopenia. A composition for treating thrombocytopenia, which comprises an effective amount of a monoacetyldiacylglycerol compound (formula (2) below) and an effective amount of G-CSF. [Selection diagram] None【課題】白血球減少症(例えば好中球減少症)及び/又は血小板減少症の治療、抑制又は緩和のための組成物の提供。【解決手段】有効量のモノアセチルジアシルグリセロール化合物(下式(2))及び有効量のG-CSFを含む、血小板減少症を治療するための組成物。【選択図】なし