According to the National Institutes of Health, black cohosh is a member of the buttercup family, and is known by the names actaea racemosa and cimicifusa racemoga. It is also known by several common names, including bugbane, bugwort, black snakeroot, rattleweed and rattletop. The roots and stems of black cohosh are used for a variety of medicinal and industrial applications; however, it also carries a few potential dangers.
Low Blood Pressure
Black cohosh lowers blood pressure, according to Dr. James F. Balch, author of "Prescription for Nutritional Healing." It should not be taken by individuals who are already taking prescription medications or using other natural remedies to lower blood pressure.
Digestive Distress
People who take black cohosh may experience adverse digestive effects, says Joe Graedon, co-author of "The People's Pharmacy Guide to Home and Herbal Remedies." Stomach aches, abdominal cramps and nausea are the most common symptoms. Digestive distress caused by a reaction to black cohosh is typically temporary, and does not produce any long-term gastrointestinal damage.
Effects on Pregnancy
Some reports indicate that taking black cohosh while pregnant may contribute to premature childbirth, says Graedon. Some medical professionals also believe that black cohosh use may play a part in miscarriage. Graedon notes that the root of this plant is not carcinogenic, and there are no studies linking black cohosh to birth defects in animals.
Other Dangers
Some individuals who take black cohosh have reported visual disturbances such as blurred vision and light sensitivity, according to Graedon. Headaches and dizziness may also occur. Although very rare, seizures may result from black cohosh use.
References
- National Institutes of Health Office of Dietary Supplements: Black Cohosh
- "Prescription for Nutritional Healing"; James A. Balch, M.D.; 1997
- "The People's Pharmacy Guide to Home and Herbal Remedies"; Joe Graedon and Teresa Graedon, PhD.; 2001
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