Recent research, supported in part by NCCAM, suggests that the herbs black cohosh (Cimicifuga racemosa) and red clover (Trifolium pretense) are no better than placebo in treating the hot flashes and night sweats that often accompany menopause. The findings were published in the journal Menopause.
Researchers from the University of Illinois at Chicago College of Medicine and Northwestern University Feinberg School of Medicine tested the herbs in women experiencing at least 35 episodes of hot flashes and night sweats per week. Although conventional menopausal hormone therapy can effectively manage these symptoms, health concerns related to such care have increased interest in alternative treatments.
Source: http://nccam.nih.gov/research/results/spotlight/042610.htm?nav=rss