Black Cohosh

Black Cohosh:  Natural Menopause Therapy In Europe, black cohosh is used for symptoms such as hot flashes, headaches, psychological difficulties, and weight gain associated with menopause. It is also reputed to be helpful for premenstrual problems and painful menstrual cramps.

Native Americans prized black cohosh and used it for a variety of purposes. The settlers learned about it from the Indians, but by the middle of the nineteenth century it was renowned as being helpful for women's problems, and other uses were more or less forgotten.

Some of the evidence on the clinical effect of black cohosh is impressive. In one study, sixty women under forty years of age who had undergone hysterectomy were divided into groups. One group got conjugated estrogen (available in the United States under the brand name Premarin), one was given estriol (another form of estrogen), a third received an estrogen-gestagen sequence, and the fourth group of women took a black cohosh extract.

Bothersome symptoms such as hot flashes disappeared slowly, over the course of four weeks, and at that point there was no difference in response among the four groups. This suggests that black cohosh may be as good at treating symptoms of menopause as are conventional estrogen treatments.

Beginning research indicates that black cohosh can lower cholesterol and strengthen bone, as estrogen does. 

See more Natural Menopause Therapy information.

The usual daily dose is equivalent to 40 mg of the herb. It may take four weeks to get the maximum benefit; the herb should not be taken for more than six months until there is more information available on long-term effects.

Black cohosh was a key ingredient in an immensely popular patent medicine, Lydia E. Pinkham's Vegetable Compound.  Black cohosh has been used for menopausal symptoms in recent years. The portion of the plant used is underground: the rhizome and roots. The main ingredients are triterpene glycosides, especially actein, related compounds, and cimigoside. Black cohosh also contains tannins, fatty acids, and phytosterols. In a laboratory test of estrogenic activity, black cohosh extract did not bind to estrogen receptors.

American Indians treated sore throats and rheumatism with this herb, but these uses have not been scrutinized by modern medical studies.

Special Precautions :  Although black cohosh is not mutagenic or carcinogenic and does not cause birth defects in animals, authorities caution pregnant women not to use it. There is a report of premature birth associated with the herb and worries that it could trigger miscarriage.

This plant, native to North American forests, has a number of popular names: bugbane, black snakeroot, rattleroot, and squaw root. It sends up graceful tall spires of white flowers; the black in its common name refers to the root or rhizome, as does cohosh, Algonquian for "rough."

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