Natural Factors WomenSense Black Cohosh Extract 40 mg, 90 Vegetarian Capsules Review
#2 of 9 · Best Third-Party Tested✓ Label verified · Supplement Facts read Sep 7, 2026Real retailer photo, cut out. Label unedited.
Buy it. The verification-first standardized pick. If your priority is knowing the capsule contains authentic, standardized black cohosh — not adulterated or under-dosed material — WomenSense is the strongest choice here thanks to Isura testing.
~$17.99~$0.40/day (2 capsules)
Why It Scores 7.8 — And The Label Line Behind Each Number
Standardization & Form
30% of scoreStandardized to 2.5% triterpene glycosides (1 mg 27-deoxyacteine per 40 mg capsule), the same active class named in the research — clean and clearly labeled.
- Form
- Vegetarian capsule
- Standardization
- 2.5% triterpene glycosides = 1 mg 27-deoxyacteine/capsule
Third-Party Testing & Purity
25% of scoreIsura provides independent identity, potency and contaminant testing. Very few black cohosh products carry any comparable verification, and this is the category's standout on that axis.
- Testing
- Isura third-party identity/purity program; Non-GMO
Dose vs Clinical Range
20% of scoreAt 40 mg per capsule you need two daily to approach the studied 40–80 mg extract range, so a 90-count bottle is only about six weeks at the higher end.
- Dose
- 40 mg extract (2.5% triterpene glycosides) per capsule
Tolerability & Safety
15% of scoreSingle-herb, non-GMO, vegetarian capsule with no licorice or dong quai to complicate the picture. Standard black cohosh liver caution still applies.
Value
10% of scoreAround $18 for 90 capsules is fair for a third-party-tested standardized extract, though two-a-day dosing raises the real monthly cost.
- Count
- 90 vegetarian capsules
- Cost per dose
- ~$0.40/day at 2 capsules
Label verified. Every figure read from the Supplement Facts photo, Sep 7, 2026.
Marketing Claims Vs. Reality
Third-party quality tested
Natural Factors' Isura program performs independent identity, potency and contaminant testing on the WomenSense line — verification most category competitors lack.
Standardized to the actives studied in menopause research
The 2.5% triterpene glycoside standardization targets 27-deoxyactein, the marker compound used across black cohosh trials.
Relieves hot flashes
Standardized black cohosh extracts show modest, inconsistent vasomotor benefit; Cochrane (Leach & Moore 2012) found insufficient evidence of superiority over placebo.
What Our Test Actually Found
Testing is the real differentiator
Black cohosh has a documented adulteration problem — cheaper Asian Actaea species are sometimes substituted for true Cimicifuga racemosa. Isura's identity testing directly addresses that risk, which matters more here than in most supplement categories.
Dose math to watch
At 40 mg per capsule, a 90-count bottle lasts ~45 days at two capsules daily. Compared with 80 mg picks, you use capsules twice as fast, which narrows the value gap despite the low sticker price.
Full analysis: all pros & cons (7), buy if / skip if
- Genuine independent (Isura) identity and purity testing
- Cleanly standardized to 2.5% triterpene glycosides
- Single-herb formula with no confounding added botanicals
- Vegetarian, Non-GMO capsule
- 40 mg per capsule means two-a-day to reach a full clinical dose
- Efficacy is still the category's modest, mixed story
- 90-count runs out in about six weeks at the higher dose
- Genuine independent (Isura) identity and purity testing
- Cleanly standardized to 2.5% triterpene glycosides
- Single-herb formula with no confounding added botanicals
- 40 mg per capsule means two-a-day to reach a full clinical dose
- Efficacy is still the category's modest, mixed story
- 90-count runs out in about six weeks at the higher dose
If your priority is knowing the capsule contains authentic, standardized black cohosh — not adulterated or under-dosed material — WomenSense is the strongest choice here thanks to Isura testing. Efficacy is still the modest, mixed category story, so buy it for the assurance, not for a guaranteed cure.
Natural Factors runs its WomenSense black cohosh through the company's Isura program, an independent identity-and-purity testing operation that is genuinely rare in this category. Each 40 mg capsule is standardized to 2.5% triterpene glycosides (1 mg 27-deoxyacteine), so you know the actives are present and consistent. It earns our Best Third-Party Tested badge for exactly that reason. The trade-off: at 40 mg, hitting a full clinical dose takes two capsules a day, and the efficacy caveats of the whole category still apply.
The pick when you want to trust the contents
WomenSense is the smart default for anyone who cares more about authenticity and purity than about the lowest price. Isura testing meaningfully reduces the adulteration risk that plagues black cohosh, and the standardization is honest. Expect modest symptom relief at best, plan on two capsules a day, and observe the usual liver caution.
If This Doesn’t Fit — Try These
01Remifemin
If you are going to try black cohosh, start with the extract the studies actually used rather than a cheaper substitute hoping it behaves the same.
03Source Naturals
The value standout among genuinely standardized options: you get a full clinical-range dose per tablet without paying premium pricing.
Quick Answers
What is Isura testing?
Isura is Natural Factors' independent quality program that verifies each batch's identity, potency and freedom from contaminants — reassurance that the capsule truly contains standardized Cimicifuga racemosa.
How many capsules should I take?
To reach the studied extract range you generally take two 40 mg capsules daily. That makes a 90-count bottle last about six weeks.
Sources & Further Reading
2 peer-reviewed sources, each linked to PubMed
- [1] Leach MJ, Moore V. Black cohosh (Cimicifuga spp.) for menopausal symptoms. Cochrane Database Syst Rev. 2012;(9):CD007244. PMID 22972105 — Black cohosh (Cimicifuga spp.) for menopausal symptoms. Insufficient evidence to support black cohosh as superior to placebo for menopausal vasomotor symptoms.
- [2] Geller SE, Studee L. Botanical and dietary supplements for menopausal symptoms: what works, what does not. J Womens Health. 2005;14(7):634-649. PMID 16181020 — Botanical and dietary supplements for menopausal symptoms: what works, what does not. Black cohosh shows the most promise among botanicals but evidence for hot-flash relief remains inconsistent.
Affiliate disclosure: every Amazon link uses our Associates tag (superachieverclub-20). We earn a small commission at no cost to you; it funds independent reviews. We never accept payment to change a ranking.