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Published online 20 June 2001 | Nature | doi:10.1038/news010621-7
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Getting to the root of ginseng
Labels for ginseng liquids, powders and capsules may bemisleading
Consumers who buy ginseng supplements for their touted energy-boosting benefits may not be getting what they bargained for.
A chemical analysis of 25 ginseng products from a California health-food store has shown that the level of ginsenosides, ginseng's active components, varies widely: 15-fold in powders and capsules, and 36-fold in liquid extracts.
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