Black Cohosh Side Effects
Applies to black cohosh: oral capsule, oral tablet.
Important warnings
This medicine can cause some serious health issues
Follow all directions on the product label and package.
Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.
Get emergency medical help if you have any of these signs of an allergic reaction while taking black cohosh: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Although not all side effects are known, black cohosh is thought to be possibly safe when taken for a short period of time (up to 1 year).
Black cohosh can harm your liver. Stop using this product and call your doctor at once if you have signs of liver problems, such as:
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nausea, loss of appetite, upper stomach pain;
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itching, tired feeling;
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dark urine, clay-colored stools; or
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jaundice (yellowing of the skin or eyes).
Common side effects may include:
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stomach pain or upset;
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heavy feeling;
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vaginal bleeding or spotting;
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headache;
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rash; or
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weight gain.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.
Frequently asked questions
More about black cohosh
Professional resources
Related treatment guides
Further information
Black cohosh side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.