WILL & DENI MCINTYRE / SCIENCE PHOTO LIBRARY WILL & DENI MCINTYRE / SCIENCE PHOTO LIBRARY
Ginseng extract. Two bottles containing ginseng extract. Ginseng is extracted from the roots of the ginseng plant (Panax sp.). There are six species of ginseng, the two most commonly used being P. quinquefolius (American) and P. ginseng (Asian, shown here). Ginseng is the most widely taken Chinese herb and has been used for 4,000 years. Ginseng contains a mixture of saponin glycosides (ginsenosides) and sugars. It is thought to enhance the immune system, regulate blood pressure, and improve libido and stamina.
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