Substrate ·evidence-based
interventions / Black Cohosh / menopausal symptoms

Does Black Cohosh help menopausal symptoms? (Grade C evidence)

Black Cohosh may modestly help menopausal symptoms in specific populations (Grade C, low certainty), especially in peri/post-menopausal women. Dose range: 40 mg/day.

Exact question reviewed

Population
peri/post-menopausal women
Intervention
Black Cohosh · 40 mg/day
Comparator
not reported
Outcome
menopausal symptoms
Time horizon
not reported

Bottom line. Black Cohosh may modestly help menopausal symptoms in specific populations (Grade C, low certainty), especially in peri/post-menopausal women. Dose range: 40 mg/day. [1 RCT]

Direction
benefit
Magnitude
inconsistent evidence for hot-flash relief; some trials positive, larger ones null
Grade
C
Certainty
low
Clinical meaning
small but potentially useful
Who it applies to
peri/post-menopausal women
Dose / form studied
40 mg/day
Safety
not assessed
The one limitation
Claim-specific limitation details are not available in this public record.

Reviewed · Evidence last changed · Claim clm_ec_bc_meno v0

Grade
C
what does the grade mean?
Certainty
low
what does certainty mean?

Grade C / low: hints of benefit in small trials; a well-run RCT could easily push this to B or to null.

Who it works for

Best-studied in peri/post-menopausal women. Recorded studied dose: 40 mg/day.

Evidence

StudyDesignRoleCite
Review & meta-analysis: isopropanolic black cohosh extract iCR for menopausal symptomspeer-reviewednot classifiedPMID:33021111

Why this grade

Reasoning trace

The current record stores Grade C at low certainty and links 1 publishable source. A claim-specific domain-by-domain grading rationale is not available in this public record, so no reason for upgrading or downgrading is inferred here.

Audit and version

Claim ID
ec_bc_meno
Claim version
not reported
Governance
legacy, not verified
Last evidence search
not reported
Last editorial review
2026-07-16T05:20:16.476Z

Public receipt · Machine-readable claim · Methodology

Dose & form

Studied intake: 40 mg/day.

People say · Evidence shows

“black cohosh reliably stops hot flashes”

Evidence: Grade C — inconsistent evidence for hot-flash relief; some trials positive, larger ones null.

How it stacks up for menopausal symptoms

Grade history

Re-review cadence: every 6 months (Grade C+) · next scheduled by · methodology v1.

Frequently asked

How long does Black Cohosh take to work for menopausal symptoms?

Trials of Black Cohosh for menopausal symptoms typically report effects within 2–4 weeks, though individual response varies. Studies rarely find benefit inside 1 week for chronic outcomes.

What dose was used in studies of Black Cohosh for menopausal symptoms?

Studied doses for Black Cohosh in menopausal symptoms trials cluster around 40 mg/day. See the dose block for the specific range and how it varies by form.

Does Black Cohosh work for menopausal symptoms if I'm not deficient?

The effect concentrates in peri/post-menopausal women. If your baseline is normal, expect a smaller effect than the trial averages.

Black Cohosh or the next-best alternative for menopausal symptoms?

See the compare block above for the head-to-head with the most-cited alternative. Grade + certainty differences matter more than any single trial.

Related

What this is — and is not

Evidence description
inconsistent evidence for hot-flash relief; some trials positive, larger ones null
Substrate's interpretation
The current reviewed record assigns Grade C at low certainty. A domain-by-domain rationale is shown only when recorded.
Discuss with a clinician
If you're on medication or have a condition that changes the calculus, bring the interaction & population blocks above to your pharmacist or prescriber before deciding.
Individualized medical advice
Not provided here or on any Substrate surface (API, agent tool, embed) — see YMYL policy.

Cite this page

Citation is encouraged. The proposed reuse license is CC-BY-4.0; status: pending-governance-ratification.

Plain-text citation
Substrate. Does Black Cohosh help menopausal symptoms? (Grade C). https://evidencebased.info/interventions/blackcohosh/menopause. Updated 2026-07-16.
BibTeX
@misc{substrate_blackcohoshmenopause,
  author = {Substrate editorial},
  title  = {Does Black Cohosh help menopausal symptoms?},
  year   = {2026},
  url    = {https://evidencebased.info/interventions/blackcohosh/menopause},
  note   = {Grade C, evidencebased.info}
}

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