PROBLEM TO BE SOLVED: To provide a novel 5-fluorouracil-induced bowel disease prophylactic and/or therapeutic agent.SOLUTION: The present invention provides a 5-fluorouracil-induced bowel disease prophylactic and/or therapeutic agent comprising bifidobacterium bifidum G9-1.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】新規な5-フルオロウラシル誘発性腸疾患の予防及び/又は治療剤を提供すること。【解決手段】ビフィドバクテリウム・ビフィダムG9-1を含有する5-フルオロウラシル誘発性腸疾患の予防及び/又は治療剤。【選択図】なし