Last verified: 42 days ago
Red Clover Leaf Extract
Also known as: Trifolium pratense, red clover isoflavones, biochanin A, formononetin, daidzein, genistein
Evidence under review. — Not yet rated
Plant estrogen source used for menopause symptoms. Evidence is limited and inconsistent.
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What it does
Red clover leaf extract is a plant-based source of isoflavones — compounds that weakly mimic estrogen in the body. It is most commonly used to ease menopause symptoms like hot flashes and night...
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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 isoflavones daily (traditional and general use range; no confirmed dose from provided studies)
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Found in
What the Science Says
Red clover leaf extract is a plant-based source of isoflavones — compounds that weakly mimic estrogen in the body. It is most commonly used to ease menopause symptoms like hot flashes and night sweats, based on the idea that these plant estrogens can partially compensate for declining hormone levels. Some traditional and preliminary evidence suggests modest benefits for bone density and cardiovascular markers in postmenopausal women, but no strong clinical evidence was available in the provided research data to confirm these effects.
What It Doesn't Do
Not a proven hormone replacement therapy. Won't reliably eliminate hot flashes for most women. No solid evidence it prevents osteoporosis or heart disease. Not a treatment for any diagnosed hormonal condition. Don't expect results equivalent to prescription estrogen therapy.
Evidence-Based Benefits
Red clover leaf extract is a plant-based source of isoflavones — compounds that weakly mimic estrogen in the body. It is most commonly used to ease menopause symptoms like hot flashes and night sweats, based on the idea that these plant estrogens can partially compensate for declining hormone levels. Some traditional and preliminary evidence suggests modest benefits for bone density and cardiovascular markers in postmenopausal women, but no strong clinical evidence was available in the provided research data to confirm these effects.
Weak EvidenceEffective at: 40-160 mg isoflavones daily (traditional and general use range; no confirmed dose from provided studies)
Source: auto-research
Absorption & Bioavailability
Moderate — isoflavones from red clover are converted by gut bacteria into active forms (like equol), but conversion efficiency varies widely between individuals depending on gut microbiome composition. People who don't produce equol may see little to no benefit.
Red Flags to Watch For
- Contains phytoestrogens that may interact with hormone-sensitive conditions like estrogen-receptor-positive breast cancer — consult a doctor before use
- May interact with blood thinners (e.g., warfarin) due to coumarin-like compounds naturally present in red clover
- Hormone-mimicking effects are poorly understood in long-term use — avoid if pregnant or breastfeeding
- Highly variable individual response due to gut microbiome differences — many users may see no measurable benefit
- Only 1 clinical trial indexed in PubMed for this specific extract form — evidence base is very thin
Products Containing Red Clover Leaf Extract
See how Red Clover Leaf Extract is used in these analyzed products:
Research Sources
- General knowledge
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-09