Centella asiatica (gotu kola)

Gotu kola has been utilized in traditional medical systems to aid boost brain function, and its benefits on alertness and mood have been examined. 2-month research of 28 older persons who received 250-750mg dosages of Gotu kola extract per day revealed that those who took the highest dose improved in working memory, alertness, and self-rated mood when compared to a control group.

Another 3-month trial in 80 older persons found that supplementation with 500 mg and 750 mg of Gotu kola extract per day enhanced strength and physical functioning much more than a placebo group. Furthermore, research on 33 patients with anxiety discovered that taking 1,000 mg of Gotu kola extract per day for two months improved attention and reduced anxiety and mental tiredness compared to their baseline.