Black Cohosh 2.5Black cohosh, Cimicifuga racemosa, is well known for promoting comfort during menopause. Black Cohosh 2. 5 supplement promotes comfort during menopause, may provide support for occasional hot flashes and promotes healthy estrogen metabolism. Black cohosh functions by maintaining healthy levels of luteinizing hormone, allowing for optimal comfort and physical well being. The herb also exhibits mild estrogenic activity by binding to estrogen receptors.