Black Cohosh
Origin: USA
Black cohosh is a member of the buttercup family native to the woodlands of eastern North America. Because cimicifuga racemosa root is bitter, it is often blended with ginger, licorice or orange peel in teas.
One meta-analysis revealed that the isopropanolic extract of black cohosh (iCR) was found to be more effective than placebo in alleviating neurovegetative symptoms (e.g., hot flashes, night sweats, palpitations) and psychological symptoms (e.g., depression) in women with natural perimenopausal and postmenopausal symptoms.[1] One of the studies within this meta-analysis also found that black cohosh improved sleep efficiency and decreased wake after sleep onset (WASO) compared to placebo.
Black cohosh root contains a small amount of salicylic acid, so people with a known allergy or sensitivity to aspirin should consult their health care practitioner before using this herb. Similarly, the herb is suspected of exerting hormonal effects, which may make it unsuitable for individuals with a history of breast or prostate cancer or other hormone-related condition. Black cohosh should not be used during pregnancy without close medical supervision due to the risk of uterine contractions. Do not use while nursing. Large doses may cause abdominal pain, nausea, headache, dizziness and miscarriage.