Red clover (Trifolium pratense) is a plant in the legume family. Its extracts are concentrated sources of isoflavones — the same family of plant compounds found in soy — and are sold for menopause symptoms.
What the research shows
Studies of red clover for hot flashes have produced inconsistent results. Some trials and meta-analyses have found modest reductions in hot flash frequency; others found no meaningful difference from placebo. Product type, dose and quality vary widely between studies, which makes the evidence hard to interpret.
Research on other uses — bone density, cholesterol, heart health — is limited and inconclusive.
How it might work
Isoflavones bind weakly to estrogen receptors and can have mild estrogen-like or estrogen-blocking effects depending on the tissue. Their effects also depend partly on gut bacteria, which convert some isoflavones into more active compounds.
Safety
Red clover appears generally well tolerated in studies lasting up to about a year. However:
- Hormone-sensitive conditions. Because of its estrogen-like activity, women with a history of breast cancer, endometrial cancer or other hormone-sensitive conditions should not take red clover without discussing it with their oncologist or clinician.
- Blood thinners. Red clover contains compounds that may affect blood clotting; caution is needed with anticoagulants.
- Pregnancy and breastfeeding. Not recommended.
If you consider it
Choose a product with a stated, standardised isoflavone content and third-party testing, give it a defined trial period, and tell your clinician. Expectations should be modest.