Several species of epimedium have traditional uses as an herbal remedy, primarily for sexual dysfunction. Commonly called horny goat weed, epimedium can cause side effects, although research data is very limited. One specific situation involving the use of epimedium may cause muscle cramps. Consult a qualified health care provider before consuming this herb.
Uses
Epimedium has been used traditionally as an aphrodisiac and to improve erectile dysfunction, sexual energy and premature ejaculation. A phytoestrogen in the plant called icariin has a similar chemical action in the body as does the drug sildenafil, known as the brand Viagra, according to eMedTV. Epimedium also has had a role in traditional medicine for relieving fatigue and arthritic and nerve pain. Research on whether epimedium actually works for any of these uses is lacking, however.
Side Effects
Due to the small number of clinical studies, information on negative reactions associated with epimedium use is limited. One report has been made of a man with congestive heart failure developing shortness of breath, chest pain and an irregular heartbeat after taking one epimedium pill per day for two weeks, according to the Memorial Sloan-Kettering Cancer Center. The center's website recommends that people with cardiovascular disorders avoid consuming epimedium.
Overdose
Muscle spasms and cramps are listed by Sloan-Kettering as side effects associated with an overdose of epimedium. The center's website does not describe the severity of the cramps or define a dosage that would constitute an overdose. Additional overdose effects could include respiratory depression, hyperactivity and pupil dilation. Again, because of the lack of research, no standard dosage recommendations are available, according to Drugs.com. Your best bet is not to exceed the dose specified on the product label.
Contraindications
More research is necessary to evaluate the toxicity of epidemium, comments Drugs.com. For now, pregnant and breastfeeding women should not take epimedium because no research has determined whether it is safe. In addition, consuming epimedium may be inadvisable for anyone with a hormone-related cancer, such as prostate or ovarian cancer, as the plant may stimulate hormonal activity.
