Black Cohosh
Black cohosh is a herb, native to the eastern portion of North America. It is considered an underground rhizome (in that way, similar to ginger and turmeric). Above the ground, the plant grows all of leaves, flowers and fruit. The fruit of the black cohosh contains its seeds.
Black cohosh is at times included in dietary supplements and other herbal selections. It is claimed to be useful as a remedy for some problems women face, including: premenstrual syndrome (PMS) and menopause, hot flashes, as well as other gynecological issues. It has also been generally used as a supposed treatment for rheumatism. To view more potential uses for black cohosh, please visit the
Treatments page.
Black cohosh roots and stems (underground) are both typically used by humans for consumption. They may be used either fresh or in dried form, and made into infusions (teas), capsules, pills, and tinctures (liquid extracts). Although similar in name, blue cohosh is of a different genus than black cohosh, and has completely different uses. The two should not be confused, nor used interchangeably.
Previously, it had been thought that black cohosh contained chemicals similar to estrogen, however, research as of late has suggested that it rather works by binding itself to serotonin receptors in the body. A recent study which was published in the Annals of Medicine also brought into question the usefulness of the herb.
Most studies of black cohosh have used the extract called Remifemin, which contains 1mg of extract in each 20mg tablet. The typical dosage is two tablets, twice daily. In tincture, the dosage should be 2ml mixed 1:1 into 90 percent (180 proof) alcohol, also twice daily. The herb's maximum effect commonly takes place within a time of four to eight weeks.
Use of black cohosh may cause unwanted side effects. Pregnant, possibly pregnant, or lactating women should under no circumstances use black cohosh. Liver damage (hepatitis) has also been reported in a few individuals using the herb, however, some women have used it for years with no such reported problems, and the black cohosh was not directly linked to the liver problems. Some other side effects reported include include: anemia, headaches, dizziness, diarrhea, increased bleeding during menstruation, gastric issues, nausea and heaviness in the legs.
To view more reported or potential side effects, please visit the
Side Effects page. Before considering taking Black Cohosh, please also consult with your doctor, especially if you have any potentially conflicting conditions or medications. Also inform your health care provider of any other herbs, dietary supplements, etc., that you are taking or have recently taken.
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