| 効果 | 増加 |
| 試験方法 | 二重盲検法 |
| 試験期間 | 1-6 ヶ月 |
| 被験者数 | 53 |
| 性別 | 男女 |
| 年齢 | 18-29 |
| 体型 | 平均 |
この研究の注釈：
Pygnogenol was associated with improved cognition and mood over 8 weeks in otherwise healthy students given a battery of tests; Pycnogeol was also associated with a reduced rate of failed tests and higher average marks