Black Cohosh
Actaea racemosa (Black Cohosh)
Leading herb for menopause symptoms, particularly hot flashes, with evidence comparable to low-dose estrogen for some women.
Black Cohosh is the most well-researched herb for menopausal symptoms. Native American women used it for centuries, and modern studies confirm benefits for hot flashes, night sweats, and mood. Unlike hormone therapy, it doesn't appear to affect estrogen-sensitive tissues, making it an option for women who can't or prefer not to use hormones.
Mechanisms of Action
Central Thermoregulation
Affects brain temperature control centers
Non-Estrogenic Action
Does not act like estrogen on tissues
Recommended Dose
20-40mg standardized extract (1mg triterpene glycosides)
Optimal Timing
- Morning and evening
- With or without food
Can be taken without food
Best Form
Standardized extract (2.5% triterpene glycosides)
Alternatives: Remifemin (most studied brand), Dried root
Remifemin is the most clinically studied preparation. Look for standardized extracts.
Duration
Minimum: 8 weeks
Optimal: 12 weeks
Cycling: German Commission E recommends limiting to 6 months. Take breaks or use under supervision long-term.
Note: Can be taken any time. Split dosing (twice daily) may provide more consistent effects.
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Hot Flash Reduction
Fewer and less severe hot flashes
Sleep Improvement
Fewer night sweats, better sleep
Mood Support
Reduced mood swings and irritability
Avoid — Uterine stimulant effects and potential hepatotoxicity
Likely safe (non-estrogenic), but consult oncologist
Who Should NOT Take This
- Liver disease
- Pregnancy
- Hormone-sensitive conditions (controversial — may be safer than thought)
- Breast Cancer History - use with caution
Drug Interactions
May add to liver stress
May have unclear interactions
May theoretically interact; limited data
Possible Side Effects
Tip: Take with food
Tip: Usually resolves
Tip: Monitor liver function; stop if symptoms occur
Warnings
- Rare liver toxicity reported — monitor for symptoms
- Limit continuous use to 6 months as precaution
- Stop and seek care if jaundice or abdominal pain occurs
Soy Isoflavones
complementaryDifferent mechanisms for menopause support
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Dong Quai
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Multi-herb approach to menopausal symptoms
Top studies from 40+ peer-reviewed papers
Sadahiro R et al. • Menopause (New York, N.Y.) (2023)
“This study provides updated evidence regarding the potentially beneficial effects of black cohosh extracts for relieving menopausal symptoms in menopausal women.”
Key Findings:
- However, black cohosh did not significantly improve anxiety (Hedges' g = 0.194, 95% CI = -0.296 to 0.684, P = 0.438) or depressive symptoms (Hedges' g = 0.406, 95% CI = -0.121 to 0.932, P = 0.131).
- The dropout rate for black cohosh products was similar to that for placebo (odds ratio = 0.911, 95% CI = 0.660 to 1.256, P = 0.568).
- This study provides updated evidence regarding the potentially beneficial effects of black cohosh extracts for relieving menopausal symptoms in menopausal women.
Lopresti AL et al. • Nutritional neuroscience (2022)
“For most phytonutrients, the effects of supplementation on HPA-axis activity in humans is unclear.”
Key Findings:
- For most phytonutrients, the effects of supplementation on HPA-axis activity in humans is unclear.
- Before more definitive conclusions about the effects of phytonutrients on the HPA-axis can be made, further research is required.
- Further research warranted to confirm findings
Castelo-Branco C et al. • Climacteric : the journal of the International Menopause Society (2021)
“With its good safety profile in general and at estrogen-sensitive organs, iCR as a non-hormonal herbal therapy can also be used in patients with hormone-dependent diseases who suffer from iatrogenic climacteric symptoms.”
Key Findings:
- Effect sizes were larger when higher dosages of iCR as monotherapy or in combination with St.
- The clinical data did not reveal any evidence of hepatotoxicity.
- Hormone levels remained unchanged and estrogen-sensitive tissues (e.g. breast, endometrium) were unaffected by iCR treatment.
- As benefits clearly outweigh risks, iCR/iCR+HP should be recommended as an evidence-based treatment option for natural climacteric symptoms.
Peng J et al. • Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences (2020)
“The limited evidence so far indicates that BCE could efficiently improve perimenopausal symptoms cause by low estrogen status of the patients recieved GnRHa treatment after surgery for endometriosis, but does not alter hormone levels of patients.”
Key Findings:
- Meta-analysis results showed that the addition of BCE did not alter hormone levels of patients, including serum estradiol levels [ MD=1.24, 95% CI(-4.58, 7.08), P>0.05] and luteinizing hormone levels [ MD=-0.02, 95% CI(-0.15, 0.11), P>0.05].
- BCE affected Kupperman's menopausal index (KMI) score 12 weeks after the surgery [ MD=-11.50, 95% CI(-20.09, -2.90), P < 0.01] and KMI score 24 weeks after the surgery [ MD=-23.68, 95% CI(-39.66, -7.69), P < 0.01].
- The limited evidence so far indicates that BCE could efficiently improve perimenopausal symptoms cause by low estrogen status of the patients recieved GnRHa treatment after surgery for endometriosis, but does not alter hormone levels of patients.
Yeung KS et al. • Phytotherapy research : PTR (2018)
“However, well-designed larger clinical trials are needed before these herbs can be recommended and to further assess their psycho-oncologic relevance.Copyright © 2018 John Wiley & Sons, Ltd.”
Key Findings:
- Overall, 45% of studies reported positive findings with fewer adverse effects compared with conventional medications.
- Based on available data, black cohosh, chamomile, chasteberry, lavender, passionflower, and saffron appear useful in mitigating anxiety or depression with favorable risk-benefit profiles compared to standard treatments.
- These may benefit cancer patients by minimizing medication load and accompanying side effects.
- However, well-designed larger clinical trials are needed before these herbs can be recommended and to further assess their psycho-oncologic relevance.Copyright © 2018 John Wiley & Sons, Ltd.
Study Type Distribution
Goals This Supplement Supports
This information is for educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before starting any supplement.