The below doses are based on scientific research, publications, traditional use, or expert opinion. Many herbs and supplements have not been thoroughly tested, and safety and effectiveness may not be proven. Brands may be made differently, with variable ingredients, even within the same brand. The below doses may not apply to all products. You should read product labels, and discuss doses with a qualified healthcare provider before starting therapy.
Adults (over 18 years old)
There is no proven effective dose for black cohosh. The British Herbal Compendium recommends 40-200 milligrams of dried rhizome daily in divided doses, although traditional doses have been as high as 1-2 grams three times daily. As a tincture/liquid, the British Herbal Compendium recommends 0.4 to 2 milliliters of a (1:10) 60% ethanol tincture daily. For menopausal symptoms, studies have used 20 milligram or 40 milligram Remifemin® tablets (containing 1 or 2 milligrams of 27-deoxyactein) twice daily or 40 drops of a liquid extract for up to 12 weeks. Some clinical studies have used 20 milligrams taken twice daily. Isopropanolic black cohosh has been taken at a dose of 40 milligrams per day for 12 weeks.
Children (under 18 years old)
There is not enough scientific information to recommend black cohosh in children.