A 2002 study by the Southern Illinois University School of Medicine (published in the annals of the New York Academy of Sciences) found that in laboratory animals, both Asian and American forms of ginseng enhance libido and copulatory performance.
These effects of ginseng may not be due to changes in hormone secretion, but to direct effects of ginseng, or it’s ginsenoside components, on the central nervous system and gonadal tissues. In males, insenosides can facilitate penile erection by directly inducing the vasodilatation and relaxation of penile corpus cavernosum.
Moreover, the effects of ginseng on the corpus cavernosum appear to be mediated by the release and/or modification of release of nitric oxide from endothelial cells and perivascular nerves. Animal studies lend growing support for the use of ginseng in the treatment of sexual dysfunction and provide increasing evidence for a role of nitric oxide in the mechanism of ginsenoside action.
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