Horny Goat Weed (Epimedium)

What are the risks of taking horny goat weed?

• Side effects. Most people seem to tolerate short-term use of horny goat weed fairly well, at least at the doses studied. It may cause upset stomach and dry mouth. In some, horny goat weed may result in irregular heartbeat, low blood pressure, nosebleeds, and mood changes. High doses have been linked to spasms and respiratory failure.
• Risks. Horny goat weed may not be safe in high doses or as a long-term treatment. People who have health conditions – such as immune disorders, heart or lung problems, low blood pressure, bipolar disorder, or thyroid problems -- should not use horny goat weed without their doctors’ approval.
• Interactions. If you take any medicines or supplements regularly, talk to your doctor before you start using horny goat weed. It could interact with drugs like blood thinners, aspirin, birth control pills, antidepressants, treatments for immune disorders and thyroid problems, and medicines that lower blood pressure or cholesterol. Using horny goat weed with nitroglycerin can be extremely dangerous. Similar to its use with pharmaceutical erectile dysfunction medicines, mixing nitroglycerin with horny goat weed can even be fatal due to the potential for severe drops in blood pressure.

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