What are horny goat weed supplements?

Horny goat weed is part of the genus Epimedium and is an herbal supplement available as a tablet, capsule or tea. Proponents think it has positive effects on the immune system and anti-inflammatory properties, and that it can treat memory loss, high blood pressure, bronchitis, hepatitis, hay fever, fatigue and the symptoms of menopause. It is best known as a natural aid to offset low sex drives and remedy erectile dysfunction. Relatively new in the United States, it is a native plant in several parts of China, where it is called yin yang huo. It also grows in other regions of Asia, including Korea. Different parts of the world call it epimedium, barrenwort, Bishop's Hat and inyokaku.

The leaves of as many as 15 species of Epimedium are used as the herb known as yin yang huo in traditional Chinese medicine. "Yin yang huo" is usually translated as horny goat weed because the Chinese characters literally mean, "obscene goat leaves of pulse plants."

In traditional Chinese medicine, Epimedium (yin yang huo) is used as a bodybuilding agent, a yang supporter, an agent to reinforce muscles and bones, and a supporter to the health of the liver and kidneys. This herb is also commonly used to treat angina pectoris (chest pain), chronic bronchitis, and neurasthenia (nervous exhaustion). As with many other herbs in Chinese medicine, horny goat weed is rarely used as a single ingredient. Horny goat weed is traditionally used as an ingredient in a yang tonic and for combating wind-damp-cold blocking qi circulation.

Despite its traditional and popular use, there is little scientific evidence in support of horny goat weed. Currently, there exists a potential benefit for the treatment of atherosclerosis symptoms and quality of life associated with hemodialysis. Other promising areas include sexual function.

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