PROBLEM TO BE SOLVED: To obtain a composition for preventing stroke onset and/or recurrence, which is useful for preventing stroke onset and/or recurrence and is expected to have prevention effect, in particular, on the stroke onset and/or recurrence in a hyperlipemic patient who has been treated with HMG-CoA RI or, in particular, on the stroke recurrence in a patient who is beyond six month after the stroke onset.SOLUTION: The composition for preventing stroke onset and/or recurrence comprises ethyl icosapentate as an active ingredient.COPYRIGHT: (C)2007,JPO&INPIT【課題】脳卒中の発症および/または再発の予防に有用で、特に、高脂血症患者でHMG-CoA RIによる治療を行なったにもかかわらず発症および/または再発する脳卒中、あるいは特に脳卒中発症後6ヶ月以降の患者における脳卒中再発の予防効果が期待される脳卒中の発症および/または再発予防用組成物の提供。【解決手段】イコサペント酸エチルエステルを有効成分として含有する、脳卒中の発症および/または再発予防用組成物。【選択図】なし