| 摘要 |
PROBLEM TO BE SOLVED: To provide both a composition for improving mental concentration capable of suppressing psychological effects and/or physical effects caused by various factors during operation, learning, etc., and effectively and safely improving operating efficiency, learning efficiency, etc., and a method for improving the mental concentration. SOLUTION: This composition for improving the mental concentration is characterized as comprising theanine. The method for improving the mental concentration comprises administering the theanine to individuals. |
