black cohosh has commonly been used to treat symptoms of menopause, premenstrual syndrome (PMS), painful menstruation, acne, weakened bones (osteoporosis), and for starting labor in pregnant women.
Black cohosh has also been tried for a lot of additional uses, such as anxiety, rheumatism, fever, sore throat, and cough, but it is not often used for these purposes these days.
Some people also apply black cohosh directly on the skin. This is because there was some thought that black cohosh would improve the skin’s appearance. Similarly, people used black cohosh for other skin conditions such as acne, wart removal, and even the removal of moles, but this is seldom done anymore.
Black cohosh also goes by the name “bugbane” because it was once used as an insect repellent. It is no longer used for this purpose. Frontiersmen had said that black cohosh was useful for rattlesnake bites, but no modern researchers have tested this.
Do not confuse black cohosh with blue cohosh or white cohosh. These are unrelated plants. The blue and white cohosh plants do not have the same effects as black cohosh, and may not be safe.