PROBLEM TO BE SOLVED: To provide a preventive or therapeutic agent for an inflammatory bowel disease such as ulcerative colitis, Crohns disease, and the like, which is highly safe and efficient, and which can be supplied at a low cost.SOLUTION: A composition includes at least one type of fullerene selected from hydroxylated fullerene, polyvinylpyrrolidone inclusion fullerene, fullerene, and pharmacologically acceptable salt thereof, as an active constituent.COPYRIGHT: (C)2013,JPO&INPIT【課題】安全性および有効性が高く低価で供給可能な、潰瘍性大腸炎、クローン病等の炎症性腸疾患の予防または治療剤の提供。【解決手段】水酸化フラーレン、ポリビニルピロリドン包接フラーレン、フラーレン、およびこれらの薬理学的に許容される塩から選ばれる少なくとも1種のフラーレン類を有効成分として含有する組成物。【選択図】なし