| abstract |
(57) [Summary] [Problem] To improve and prevent fatigue caused by physical fatigue and mental stress. SOLUTION: The following formula (I) such as idebenone: [In the formula, R represents a methyl group or a methoxy group, or two Rs are bonded to each other to represent one butadienylene group, and n represents an integer of 4 to 22. An anti-fatigue agent comprising a compound represented by the formula (I) or a hydroquinone derivative thereof as an active ingredient. |