Epimedium sagittatum is also known as horny goat weed or yin yang huo. It traditionally has been used to treat kidney, liver and joint disorders, though many people in the United States purchase this supplement for use as an aphrodisiac. While it is found in the Chinese pharmacopeia of the Han Dynasty, existing from 206 BC to 219 AD, little modern scientific research on this herb exists. You should consult a healthcare provider before adding horny goat weed to any regimen.
Sex-Boosting Effect
Epimedium sagittatum can have a sex-enhancing effect, according to Ray Sahelian, Los Angeles physician and author of “Natural Sex Boosters.” This effect is mild to moderate, and you’ll most likely notice it after using the herb for three to four days. The exact mechanism for this is scientifically unknown, however the herb’s flavonoids are believed to enhance nitric oxide formation, which can lead to better erections for men, notes Sahelian. The herb also may affect neurotransmitters including serotonin and dopamine.
Immune Stimulation
Epimedium sagittatum may stimulate your immune system and also enhance DNA synthesis in those with suppressed immune systems, according to “The Pharmacology of Chinese Herbs,” by Kee Chang Huang and Walter Michael Williams. This may have an important application in cases of HIV because the anti HIV-agent AZT can cause a reduction in DNA synthesis. Epimedium may help reverse DNA inhibition in people taking AZT and reduce toxicity due to AZT, note Huang and Williams. However, this supplement should be used only under a doctor's direct supervision if taken for such purposes.
Side Effects
In high doses, Epimedium sagittatum can lead to a rise in body temperature and sweating, cautions Sahelian. High doses also can act as a stimulant and cause a rapid heartbeat or heart palpitations. There is little scientific research on this herb, so data on how long you can safely use it is not currently available. Sahelian recommends taking breaks from regular use until more human studies are conducted.
References
- Ray Sahelian: Epimedium herb Extract
- “Natural Sex Boosters;” Ray Sahelian; 2003
- “The Pharmacology of Chinese Herbs;” Kee Chang Huang and Walter Michael Williams; 1999
- “The Genus Epimedium and Other Herbaceous Berberidaceae;” William Thomas Stearn and Julian Shaw; 2002
- PubMed.gov: Effect of Epimedium sagittatum on quality of life
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