AMERICAN GINSENG (EXTRACT) IMPROVES COGNITION AND MEMORY FUNCTION
Effects of American ginseng (Panax quinquefolius)on neurocognitive function: an acute, randomised,double-blind, placebo-controlled, crossover study. Andrew Scholey… & Con Stough(Psychopharmacology (2010) 212:345–356) Results There was a significant improvement of working memory (WM) performance associated with P. quinquefolius. Corsi block performance was improved by all doses at all testing times. There were differential effects of all doses on other WM tasks