Red Clover

Red clover is a herbaceous, short-lived perennial of the bean family, variable in size, with a deep taproot, three-part leaves often marked by a pale crescent, and dense heads of pink to purple flowers. It is native to Europe, western Asia, and northwest Africa and has become naturalized across much of the Americas and Oceania. In agriculture it is valued as a nitrogen-fixing fodder crop and green manure.

The plant's flowers and leaves contain isoflavones, a group of phytoestrogens that includes biochanin A and formononetin, along with other flavonoids and saponins ^[2]. Because these compounds are structurally similar to estrogen, red clover extracts are marketed as a botanical option for easing the symptoms of menopause ^[1]. The plant also has a long history of folk use, and its flowers are edible and appear in teas and preserves.

Clinical research on red clover has centered on menopausal hot flashes. A systematic review and meta-analysis of randomized trials found a modest but statistically significant reduction in the frequency of hot flashes compared with placebo ^[1]. A separate randomized, placebo-controlled trial reported that red clover isoflavones improved both menopausal symptom scores and blood lipid levels in postmenopausal women ^[2]. Evidence for the genitourinary symptoms of menopause remains limited and inconsistent ^[3]. Red clover is sold as a dietary supplement rather than as an approved medicine, and professional bodies have generally not endorsed it as a standard treatment ^[3].

Red clover is generally well tolerated; side effects are usually mild, like headache or GI upset. Because it has estrogenic activity, it's cautioned in people with hormone-sensitive conditions such as certain breast or uterine cancers, and it may interact with hormonal medications and blood thinners. It's best used under guidance if you have any hormone-related history.