PROBLEM TO BE SOLVED: To provide a mental fatigue recovery agent capable of showing mental fatigue recovery effect by oral intake, and to provide an improver for frontal lobe impairment. ! SOLUTION: A mental fatigue recovery agent contains as an active ingredient, fruit juice, a ground product, powder, an extract or a crude purified product or a purified product of an extract of Viburnum dilatatum belonging to genus Viburnum, family Caprifoliaceae. ! COPYRIGHT: (C)2013,JPO&INPIT