Black Cohosh
Relieving menopausal symptoms, particularly hot flashes, night sweats, and mood changes in perimenopausal women.
herbBlack cohosh is a popular botanical supplement used primarily to manage menopausal symptoms like hot flashes and night sweats. Evidence suggests it may offer relief for some women, though overall clinical results remain mixed.
Quick answer
What it is: Black cohosh (Actaea racemosa) is a perennial herb native to North America, traditionally utilized for its potential effects on the female reproductive system.
May support:Perimenopause, Menopause
Evidence Summary
Several systematic reviews and clinical trials indicate that black cohosh may reduce the frequency and severity of vasomotor symptoms. For instance, a 2025 RCT demonstrated significant symptom reduction when combined with other botanicals, and a 2016 systematic review noted it as a common CAM therapy used when HRT is avoided. Some studies suggest superior efficacy when combined with St. John's Wort for psychological climacteric symptoms.
Last reviewed · Jun 2026
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How to use
Always consult a qualified clinician.Editorial guidance
- Hormone replacement therapy
- Liver-metabolized drugs
- Pregnant
- Breastfeeding
- History of liver disease
- Hormone-sensitive conditions (e.g., breast cancer, uterine fibroids)
- Allergy to plants in the Ranunculaceae family
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Suggested dosage
General guidance — discuss specifics with a clinician.
Active medicinal compounds
Traditional use
Safety
Safety warnings
Avoid if
- Pregnant
- Breastfeeding
- History of liver disease
- Hormone-sensitive conditions (e.g., breast cancer, uterine fibroids)
- Allergy to plants in the Ranunculaceae family
Medication interactions
- Hormone replacement therapy
- Liver-metabolized drugs
Reported side effects
- Gastrointestinal upset
- Headache
- Rash
- Weight gain
- Vaginal spotting
- Dizziness
General guidance — discuss specifics with a clinician.
Evidence ecosystem
Scientific literature, clinical guidance, government sources, ongoing research, traditional use, and lived experience — grouped by source type and quality.
Overall grade
Several systematic reviews and clinical trials indicate that black cohosh may reduce the frequency and severity of vasomotor symptoms. For instance, a 2025 RCT demonstrated significant symptom reduction when combined with other botanicals, and a 2016 systematic review noted it as a common CAM therapy used when HRT is avoided. Some studies suggest superior efficacy when combined with St. John's Wort for psychological climacteric symptoms.
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Systematic Reviews(3)
Structured reviews of the full body of evidence (incl. Cochrane).
Maunder A, Mardon AK, Rao V, Torkel S, Metri NJ, Liu J · Climacteric : the journal of the International Menopause Society · 2026
Menopausal hormone therapy is standard treatment, but some women use complementary therapies. This review examines complementary therapies for menopause to inform International Menopause Society (IMS) recommendations. A systematic search of six databases (January 2022-December 2024) identified randomized controlled trials (RCTs) and systematic reviews on complementary therapies for menopause. Outcomes included menopausal, vasomotor, genitourinary, cardiometabolic, sleep symptoms, bone health and safety. The study quality and certainty of evidence were evaluated using Cochrane Risk of Bias (RoB2), A MeaSurement Tool to Assess Systematic Reviews (AMSTAR 2) and Grading of Recommendations, Assessment, Development, and Evaluation (GRADE). From 3187 citations, 158 studies were included: one overview, 36 meta-analyses, seven systematic reviews and 114 RCTs. While promising evidence was found for acupuncture, Chinese herbal medicine (CHM), herbs, nutrients, mind-body/touch therapies for a va
Systematic ReviewPubMedVery High QualityYeung KS, Hernandez M, Mao JJ, Haviland I, Gubili J · Phytotherapy research : PTR · 2018
Anxiety and depression are prevalent among cancer patients, with significant negative impact. Many patients prefer herbs for symptom relief to conventional medications which have limited efficacy/side effects. We identified single-herb medicines that may warrant further study in cancer patients. Our search included PubMed, Allied and Complementary Medicine, Embase, and Cochrane databases, selecting only single-herb randomized controlled trials between 1996 and 2016 in any population for data extraction, excluding herbs with known potential for interactions with cancer treatments. One hundred articles involving 38 botanicals met our criteria. Among herbs most studied (≥6 randomized controlled trials each), lavender, passionflower, and saffron produced benefits comparable to standard anxiolytics and antidepressants. Black cohosh, chamomile, and chasteberry are also promising. Anxiety or depressive symptoms were measured in all studies, but not always as primary endpoints. Overall,
Systematic ReviewPubMedVery High QualityHormone Therapy and Other Treatments for Symptoms of Menopause.
Hill DA, Crider M, Hill SR · American family physician · 2016
The results of large clinical trials have led physicians and patients to question the safety of hormone therapy for menopause. In the past, physicians prescribed hormone therapy to improve overall health and prevent cardiac disease, as well as for symptoms of menopause. Combined estrogen/progestogen therapy, but not estrogen alone, increases the risk of breast cancer when used for more than three to five years. Therefore, in women with a uterus, it is recommended that physicians prescribe combination therapy only to treat menopausal symptoms such as vasomotor symptoms (hot flashes) and vaginal atrophy, using the smallest effective dosage for the shortest possible duration. Although estrogen is the most effective treatment for hot flashes, nonhormonal alternatives such as low-dose paroxetine, venlafaxine, and gabapentin are effective alternatives. Women with a uterus who are using estrogen should also take a progestogen to reduce the risk of endometrial cancer. Women who cannot tolerate
Systematic ReviewPubMedVery High Quality
Randomized Human Trials(2)
Controlled human studies with random assignment.
Pokushalov E, Ponomarenko A, Garcia C, Kasimova L, Pak I, Shrainer E · European journal of nutrition · 2025 · n=90
This randomized, double-blind, parallel-group clinical trial aimed to evaluate the efficacy of Black Cohosh, Soy Isoflavones, and SDG Lignans in alleviating menopausal symptoms compared to a placebo. Ninety-six postmenopausal women aged 45-60 years were enrolled. Participants were randomized to receive either the study supplements or a placebo for 90 days, with Menopause Rating Scale (MRS) scores collected at baseline and every 4 weeks to monitor symptom changes. Secondary outcomes assessed included hormonal variations and the incidence of adverse symptoms. Of the initial cohort, 90 participants completed the study with high adherence. Significant improvements were observed in the treatment group across all MRS domains: somatic (- 54.3% difference, p < 0.01), psychological (- 54.3% difference, p < 0.01), urogenital (-37.3% difference, p < 0.01), and total score (- 48.0% difference, p < 0
Randomized TrialPubMedHigh QualityAlternative and complementary therapies for the menopause.
Borrelli F, Ernst E · Maturitas · 2010
The use of complementary and alternative medicine (CAM) among menopausal women has increased in the last years. This review examines the evidence from systematic reviews, RCTs and epidemiological studies of CAM in the treatment of menopausal symptoms. Some evidence exists in favour of phytosterols and phytostanols for diminishing LDL and total cholesterol in postmenopausal women. Similarly, regular fiber intake is effective in reducing serum total cholesterol in hypercholesterolemic postmenopausal women. Clinical evidence also exists on the effectiveness of vitamin K, a combination of calcium and vitamin D or a combination of walking with other weight-bearing exercise in reducing bone mineral density loss and the incidence of fractures in postmenopausal women. Black cohosh appears to be effective therapy for relieving menopausal symptoms, primarily hot flashes, in early menopause. Phytoestrogen extracts, including isoflavones and lignans, appear to have only minimal effect on hot flash
Randomized TrialPubMedHigh Quality
Observational Studies(6)
Cohort, case-control, and cross-sectional human studies.
Choudhury R, Coelho K, Suryawanshi S, Hajare A, Kumar A · Cureus · 2025
Menopause affects 1.5 million women annually, with perimenopause lasting 2-8 years and causing symptoms like hot flashes, sleep disturbances, mood changes, and joint pain. While hormone replacement therapy (HRT) is effective, safety concerns limit its use, leading many women to seek nonhormonal alternatives. Nutraceuticals such as ashwagandha, vitex, and black cohosh offer potential benefits, with 80% of women using supplements. This study evaluates the efficacy and safety of Arth perimenopause multisymptom capsules, providing evidence for nutraceuticals as an alternative to HRT. The Effectiveness of Multisymptom Support for Better Relief and Alleviation of Common Effects in Perimenopause (EMBRACE PERIMENOPAUSE) study was a prospective, observational trial conducted at Redkar Hospital and Research Center, Goa. Thirty perimenopausal women aged 40-48 years with irregular menstrual cycles and at least two menopausal symptoms received one Arth capsule daily for 60 days. Using standardized
Observational StudyPubMedLow QualityThe role of diet in managing menopausal symptoms: A narrative review.
Yelland S, Steenson S, Creedon A, Stanner S · Nutrition bulletin · 2023
Menopause is a natural stage that occurs when women stop menstruating, during which many women experience physical and psychological symptoms that can affect their quality of life and ability to work. Dietary modifications and food supplements may be explored by some women as alternatives to hormone replacement therapy, although existing reviews and expert position statements have given this limited consideration. This narrative review summarises the current evidence for dietary patterns, and botanical and food supplements, in the management of common menopausal symptoms, including vasomotor symptoms (VMS; hot flushes; night sweats), changes in bodyweight and composition, psychological symptoms (depression; anxiety; cognitive changes), sleep disturbances, joint pain, skin changes and urogenital symptoms. Soy isoflavones may reduce the frequency and/or severity of VMS, although results are inconsistent, and it is unclear whether dietary and supplemental sources have comparable effects.
Observational StudyPubMedLow QualityHerbal preparations for the menopause: beyond isoflavones and black cohosh.
Depypere HT, Comhaire FH · Maturitas · 2014
Complementary and alternative medicines (CAM) such as isoflavones and black cohosh are commonly used to deal with menopausal symptoms, but benefit a limited proportion of women. The aim of this minireview is to summarize the evidence of the efficacy and safety of other herbal preparations. Randomized controlled trials (RCTs) find that the extracts of Mediterranean pine bark (Pycnogenol(®)), linseed, and Lepididium meyenii (Maca) reduce vasomotor symptoms. The results of RCTs of the hop flavonoid 8-prenylnaringenin are conflicting. Animal and human studies suggest that Dioscorea villosa (Wild yam),and Broccoli may protect against osteoporosis and breast and gynecological cancers but further evidence is required. Linseed may protect against breast cancer but the results are conflicting.
Observational StudyPubMedLow Quality
Clinical Trial Registries(2)
Registered ongoing or completed trials (ClinicalTrials.gov).
n=210 · NCT01481025 · UNKNOWN · UNKNOWN
Climacteric Complains bring to women many problems for living a normal life - hot flashes, irritation are 2 of many problems and the mixture of those 2 plant extract must bring a new horizon for this part of time.
Clinical TrialClinicalTrials.govModerate Qualityn=422 · NCT06267560 · COMPLETED · COMPLETED
Study CTQJ230A12303 is a randomized, double-blind placebo-controlled, Phase IIIb study to evaluate the efficacy, safety and tolerability of pelacarsen (TQJ230) 80 mg s.c. QM compared with placebo s.c. QM in US Black/African American and Hispanic participants with established ASCVD and elevated levels of Lp(a) who are treated for cardiovascular (CV) risk factors according to local practice/guidelines for the reduction of cardiovascular risk.
Clinical TrialClinicalTrials.govModerate Quality
Limitations: Consistency across trials is lacking; some high-quality systematic reviews suggest that the benefit of black cohosh is not significantly greater than placebo in all populations. Variation in extract types, dosages, and study durations contributes to conflicting results. Additionally, many trials involve multi-ingredient formulas, making it difficult to isolate the efficacy of black cohosh alone.
This page is educational. Statements use phrases like "may support" and "has been studied for"because no remedy here is approved to cure, treat, or reverse any condition. Discussion happens on the ailment pages — community statistics here are derived from those reports. Always consult a qualified clinician.
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