Black cohosh is a hardy plant found in the forests of North America. Extracts of black cohosh are prepared from the plant's dried roots and thickened, underground rootlike stem (rhizome).

Uses

In laboratory studies, extracts of black cohosh have shown estrogen-like properties. It is used for treating the following conditions:

• premenstrual discomfort
• painful menstruation (dysmenorrhea)
• menopausal symptoms

Dose

Black cohosh is available in a variety of product types.

• The recommended daily dose of a black cohosh product is the equivalent of 40 milligrams of the crude herbal preparation, which consists of dried roots and rhizome.
• Use of black cohosh should not exceed 6 months.

Cautions

Situations in which use of black cohosh is not advised
Do not use black cohosh during pregnancy or while nursing. Women with breast cancer and women with a family history of breast cancer should speak with their doctors regarding black cohosh use.

Side effects

Black cohosh may cause gastrointestinal discomfort or upset stomach. It may also cause miscarriage.

Drug interactions

There are no known interactions of black cohosh with any drugs.