It may be effective because it functions as a phytoestrogen, a plant-based compound that mimics the action of the hormone estrogen
Black cohosh, also known as black snakeroot or bugbane, is a medicinal root. It is used to treat women's hormone-related symptoms, including PMS
helped relieve menstrual cramps and menopausal symptoms, such as hot flashes, irritability, mood swings, and sleep disturbances. Today, people use black cohosh for these same reasons. In fact, the herb has been widely used in Europe for more than 40 years and is approved in Germany for premenstrual discomfort, painful menstruation, and menopausal symptoms.
Cultivation Practices. Black cohosh prefers a rich, moist, soil that is high in organic matter. In its natural habitat, it is usually found in shaded or partially shaded areas, although it will grow in full sun.
Since that time, black cohosh has commonly been used to treat symptoms of menopause, premenstrual syndrome (PMS), painful menstruation, weakened bones (osteoporosis), and for starting labor in pregnant women. It is also used to promote sleep, for breast cancer, heart disease, to improve mental function, for infertility, arthritis, and indigestion.