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headache, rash, a feeling of heaviness, vaginal spotting or bleeding, and weight gain.
Some reports have linked black cohosh to liver damage. It is not known for sure if black cohosh is the cause of liver damage in these cases. More information is needed. Until more is known, people who take black cohosh should watch for symptoms of liver damage such as yellowing of the skin and eyes (jaundice), unusual fatigue, or dark urine. If these symptoms develop, black cohosh should be stopped and medical attention should be sought. People who take black cohosh should get periodic blood tests to check for liver damage.
Do not use black cohosh if:
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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.