A Double-Masked Study of the Effects
of Ginseng on Cognitive Functions

This section is compiled by Frank M. Painter, D.C.
Send all comments or additions to:   Frankp@chiro.org

FROM:   Current Therapeutic Research 1996;   57 (12):   959–968

Sorensen H, Sonne J

The effects of a pure ginseng preparation on a variety of cognitive functions was compared with those of placebo in a double-masked, randomized, test-retest design. The subjects were healthy volunteers older than 40 years of age who were given the ginseng preparation or placebo for 8 to 9 weeks. Of the 112 subjects who completed the study, 55 received ginseng and 57 received placebo. The ginseng group showed a tendency to faster simple reactions and significantly better abstract thinking than the controls. However, there was no significant difference between the two groups in concentration, memory, or subjective experience.

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