Horny goat weed, also referred to as Yin Yang Huo, arrow-leaf, barrenwort or chien-hsieh, is a plant used to enhance sexual arousal. The herb may help increase testosterone production and may help improve erectile dysfunction, according to Drugs.com. There is no current clinical evidence that the horny goat weed will treat any medical conditions. Dangers may exist from taking horny goat weed and you should speak with a doctor before taking this or any herbal supplement to ensure the product is safe for you.
Long Term and High Dose Adverse Reactions
Individuals may use the supplement safely for up to two years, but taking horny goat weed longer or taking high doses may cause adverse reactions, suggests RxList.com. Some possible side effects include a nosebleed, vomiting, dry mouth and dizziness. High doses of horny goat weed may cause symptoms such as difficulty breathing and muscle spasms.
Decreased Blood Pressure
Horny goat weed may cause a decrease in blood pressure. The supplement may cause blood to thin and move easier through the blood vessels, which may lower blood pressure in the body, according to MayoClinic.com. Individuals who have decreased blood pressure or who are on medications to lower blood pressure should speak with a doctor before taking horny goat weed.
Pregnancy and Breastfeeding
Pregnant women and women who are breastfeeding an infant should not take horny goat weed supplements. The herb may cause harm to the baby and no clinical trials exist to determine its safety for infant consumption, according to Drugs.com.



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