Is Red Clover Safe with Hormone Replacement Therapy (Estradiol)?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Inform your prescriber if you are taking Red Clover alongside HRT. Combined estrogenic activity may lead to estrogen excess symptoms such as breast tenderness, bloating, or increased risk of endometrial stimulation.
Why this interaction occurs
Red Clover contains isoflavones (formononetin, biochanin A, daidzein, genistein) that bind to estrogen receptors with preferential beta-receptor affinity. When combined with exogenous estradiol in HRT, cumulative estrogenic stimulation may exceed therapeutic thresholds and increase associated risks.
Evidence
Evidence level: moderate.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 1,131,768 reports mentioning Hormone Replacement Therapy (Estradiol). This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Hormone Replacement Therapy (Estradiol) + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Red Clover interactions → · All Hormone Replacement Therapy (Estradiol) interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.