Panax ginseng: Standardization and Biological Activity
ABSTRACT Panax ginseng is one of the most investigated medicinal plants. In the Eastern world it has been used for more than 2000 years as a tonic and prophylactic to increase nonspecific resistance against a variety of stress agents. The plant contains more than 200 identified chemical compounds and among them the ginsenosides are considered the most important constituents. Consistent efficacy and safety require constantly uniform composition, a condition which the raw material (roots) can scarcely fulfill.