Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Cohosh—specifically, black cohosh (Actaea racemosa) and blue cohosh (Caulophyllum thalictroides)—has been used in traditional herbal medicine to support pregnancy, particularly for inducing labor or easing childbirth. Indigenous peoples and later European settlers in North America used these herbs for various gynecological issues, including menstrual discomfort and labor induction. However, the evidence supporting their effectiveness for pregnancy-related uses is minimal and largely anecdotal. Black cohosh is sometimes used today by midwives for labor induction, but clinical studies have not validated its safety or efficacy for this purpose. Blue cohosh, in particular, poses significant risks; it contains compounds that can cause toxicity, leading to adverse effects in both mother and fetus, such as heart complications and birth defects. Modern medical guidelines strongly advise against using blue cohosh during pregnancy. Systematic reviews and clinical trials have generally found insufficient evidence to recommend either herb for induction of labor or other pregnancy-related benefits. In summary, while cohosh has a historical role in traditional pregnancy support, there is little scientific backing, and safety concerns—especially with blue cohosh—limit its use.

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