Last verified: 58 days ago
Red Clover
Also known as: Trifolium pratense, red clover isoflavones, red clover extract, RCE, biochanin A, formononetin, daidzein, genistein
Evidence under review. — Not yet rated
Plant-based estrogen source. Best evidence for easing menopause symptoms and improving cholesterol in postmenopausal women.
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What it does
Red clover is a flowering legume rich in isoflavones — plant compounds that mimic estrogen in the body. In postmenopausal women, red clover isoflavones have been shown to reduce hot flashes and...
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Evidence quality
Evidence base hasn't been formally rated yet. See research below.
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Clinical dose
40-160 mg/day isoflavones based on study doses
What the Science Says
Red clover is a flowering legume rich in isoflavones — plant compounds that mimic estrogen in the body. In postmenopausal women, red clover isoflavones have been shown to reduce hot flashes and other menopause symptoms while also improving cholesterol levels, including lowering LDL and triglycerides and raising HDL, over 3–6 months of use. Some research also suggests a modest benefit for urinary urgency in women with overactive bladder, though results are mixed.
What It Doesn't Do
Not a cancer treatment — the one glioblastoma trial using a multi-ingredient blend showed no significant survival benefit. No proven benefit for men or premenopausal women. Won't replace hormone therapy for severe menopause symptoms. No solid human evidence for anti-aging or longevity claims. Animal and lab studies on cancer are not proof it works in humans.
Evidence-Based Benefits
Reduces hot flashes and other menopause symptoms in postmenopausal women after 3–6 months.
Moderate EvidenceEffective at: Not precisely defined in provided studies
Supporting studies (click to view on PubMed):
Lowers LDL and triglycerides while raising HDL cholesterol in postmenopausal women with dyslipidemia.
Moderate EvidenceEffective at: Not precisely defined in provided studies
Supporting studies (click to view on PubMed):
May reduce the bother of urinary urgency in postmenopausal women, but overall bladder symptom relief is limited.
Weak EvidenceEffective at: Fermented red clover extract twice daily for 3 months
Supporting studies (click to view on PubMed):
Absorption & Bioavailability
Moderate — isoflavones require gut bacteria to convert into active forms like equol; individual response varies significantly based on gut microbiome composition
Red Flags to Watch For
- Contains phytoestrogens — women with hormone-sensitive conditions (e.g., estrogen receptor-positive breast cancer) should consult a doctor before use
- Most studies are short-term (3–6 months); long-term safety in humans is not established
- Many products combine red clover with other ingredients, making it hard to isolate its specific effects
- Bioavailability varies widely between individuals depending on gut microbiome — some people may get little benefit
- Animal studies (fish model) showed estrogenic reproductive effects — relevance to humans is unclear
Products Containing Red Clover
See how Red Clover is used in these analyzed products:
Frequently Asked Questions
What does Red Clover do?
Plant-based estrogen source. Best evidence for easing menopause symptoms and improving cholesterol in postmenopausal women.
What is the effective dose of Red Clover?
40-160 mg/day isoflavones based on study doses
Is Red Clover safe?
Contains phytoestrogens — women with hormone-sensitive conditions (e.g., estrogen receptor-positive breast cancer) should consult a doctor before use
What doesn't Red Clover do?
Not a cancer treatment — the one glioblastoma trial using a multi-ingredient blend showed no significant survival benefit.
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25