PROBLEM TO BE SOLVED: To provide a novel hemolysin inhibitory composition, particularly a hemolysin inhibitory composition having strong inhibitory activity and a wide inhibitory spectrum.SOLUTION: This invention provides a hemolysin inhibitory composition comprising an indoloquinoline derivative represented by general formula (1) or salt thereof.COPYRIGHT: (C)2015,JPO&INPIT【課題】新規の溶血毒阻害用組成物を提供すること。特に、より阻害活性が強く、またより阻害スペクトルが広い溶血毒阻害用組成物を提供すること。【解決手段】一般式(1)で表されるインドロキノリン誘導体又はその塩を含有する溶血毒阻害用組成物。【選択図】なし