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Benefits of Black Cohosh

Evidence:Strong
·

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Evidence-Based Benefits

  • Hot flash reduction — the Cochrane review by Leach & Moore (2012) evaluated 16 RCTs and found that black cohosh significantly reduced vasomotor symptoms vs placebo, with the Remifemin extract showing the most consistent results
  • Menopausal symptom complex — Osmers et al. (2005) conducted a large RCT of 304 women and found that 40mg of isopropanolic black cohosh extract significantly improved the Menopause Rating Scale score compared to placebo over 12 weeks
  • Sleep improvement — by reducing hot flashes and night sweats, black cohosh indirectly improves sleep quality during the menopausal transition
  • Non-estrogenic safety — modern research has demonstrated that black cohosh does not stimulate estrogen receptors or increase endometrial thickness, making it potentially safe for women with estrogen-sensitive conditions (though always consult oncology)

What the Research Says

Black Cohosh is well-supported by clinical evidence for alleviating menopausal symptoms. A Cochrane review by Leach and Moore (2012) analyzed 16 randomized controlled trials, concluding that black cohosh significantly reduces vasomotor symptoms compared to placebo, despite variability in study quality. Osmers et al. (2005) conducted a rigorous RCT involving 304 menopausal women, demonstrating that isopropanolic black cohosh extract (iCR), the basis of Remifemin, improved menopausal complaints over 12 weeks.

Recent studies further validate these findings. Sadahiro et al. (2023) conducted a meta-analysis of 22 studies involving 2,310 women, confirming that black cohosh extracts significantly improved overall menopausal symptoms, hot flashes, and somatic symptoms compared to placebo. Castelo-Branco et al. (2021) reviewed and analyzed data from 43 studies, reinforcing the efficacy of isopropanolic black cohosh extract in managing menopausal symptoms.

Regarding safety, Naser et al. (2011) performed a meta-analysis of five randomized controlled trials involving 1,117 women, finding no evidence of hepatotoxicity associated with isopropanolic black cohosh extract. Both the American Herbal Products Association and the European Medicines Agency have concluded that hepatotoxicity risk is very low when using standardized extracts.

These studies collectively highlight the efficacy and safety of black cohosh in managing menopausal symptoms, supported by rigorous clinical evidence.

Related Conditions

Menopause
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References

  1. ReviewLeach MJ, Moore V (2012). Black cohosh (Cimicifuga spp.) for menopausal symptoms. Cochrane Database of Systematic Reviews. DOI PubMed
  2. RCTOsmers R, Friede M, Liske E, et al. (2005). Efficacy and safety of isopropanolic black cohosh extract for climacteric symptoms. Obstetrics & Gynecology. DOI PubMed
  3. Meta-analysisSadahiro R, Matsuoka LN, Zeng BS, Chen KH, et al. (2023). Black cohosh extracts in women with menopausal symptoms: an updated pairwise meta-analysis.. Menopause (New York, N.Y.). DOI PubMed
  4. Castelo-Branco C, Gambacciani M, Cano A, Minkin MJ, et al. (2021). Review & meta-analysis: isopropanolic black cohosh extract iCR for menopausal symptoms - an update on the evidence.. Climacteric : the journal of the International Menopause Society. DOI PubMed
  5. Meta-analysisNaser B, Schnitker J, Minkin MJ, de Arriba SG, et al. (2011). Suspected black cohosh hepatotoxicity: no evidence by meta-analysis of randomized controlled clinical trials for isopropanolic black cohosh extract.. Menopause (New York, N.Y.). DOI PubMed
  6. Meta-analysisShams T, Setia MS, Hemmings R, McCusker J, et al. (2010). Efficacy of black cohosh-containing preparations on menopausal symptoms: a meta-analysis.. Alternative therapies in health and medicine. PubMed
  7. Fan CW, Cieri-Hutcherson NE, Hutcherson TC (2022). Systematic Review of Black Cohosh (Cimicifuga racemosa) for Management of Polycystic Ovary Syndrome-Related Infertility.. Journal of pharmacy practice. DOI PubMed
Show 5 more references
  1. Naser B, Castelo-Branco C, Meden H, Minkin MJ, et al. (2022). Weight gain in menopause: systematic review of adverse events in women treated with black cohosh.. Climacteric : the journal of the International Menopause Society. DOI PubMed
  2. Peng J, Xu W, Li X, Wu Q (2020). [Efficacy of black cohosh extracts for improving low estrogen status induced by postoperative GnRHa treatment in patients with endometriosis: a systematic review].. Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences. DOI PubMed
  3. Ruan X, Mueck AO, Beer AM, Naser B, et al. (2019). Benefit-risk profile of black cohosh (isopropanolic Cimicifuga racemosa extract) with and without St John's wort in breast cancer patients.. Climacteric : the journal of the International Menopause Society. DOI PubMed
  4. Fritz H, Seely D, McGowan J, Skidmore B, et al. (2014). Black cohosh and breast cancer: a systematic review.. Integrative cancer therapies. DOI PubMed
  5. Palacio C, Masri G, Mooradian AD (2009). Black cohosh for the management of menopausal symptoms : a systematic review of clinical trials.. Drugs & aging. DOI PubMed