Navigating the changes of midlife often involves experiencing various menopausal symptoms, with hot flashes being among the most common. Many women seek non-pharmacological options to help manage these experiences.
Red clover (Trifolium pratense L.) is a plant that contains isoflavones, compounds that are sometimes referred to as phytoestrogens. Interest has grown in understanding if red clover isoflavones might offer support for women experiencing menopausal hot flashes.
Understanding Menopausal Hot Flashes
Hot flashes are sudden feelings of warmth, often most intense over the face, neck, and chest, which can be accompanied by sweating and skin redness. They are a hallmark symptom of menopause and can vary significantly in frequency and intensity among individuals. These vasomotor symptoms are thought to be related to fluctuating hormone levels during the menopausal transition.
Red Clover Isoflavones: What Are They?
Red clover isoflavones are a type of phytoestrogen, which are plant-derived compounds structurally similar to human estrogen. These compounds, including genistein, daidzein, formononetin, and biochanin A, are found naturally in red clover. Because of their structural similarities, phytoestrogens can interact with estrogen receptors in the body, which is how they are thought to exert their effects [1].
The potential influence of these isoflavones on estrogen receptors has led researchers to investigate their possible role in addressing symptoms associated with declining estrogen levels during menopause, such as hot flashes [2].
Clinical Evidence for Red Clover Isoflavones and Hot Flashes
Multiple studies, including systematic reviews and meta-analyses, have explored the effect of red clover isoflavones on menopausal hot flashes. A meta-analysis published in 2021, which evaluated randomized controlled trials, suggested that red clover extract may offer clinically meaningful relief for hot flashes and other menopausal symptoms in peri- and post-menopausal women [3].
Another systematic review and meta-analysis specifically focused on a standardized extract of Trifolium pratense (Promensil) at a dosage of 80mg. This analysis, published in 2017, also indicated beneficial effects in managing menopausal hot flashes [4].
Earlier reviews, such as one from 2015, also examined the efficacy of phytoestrogens, including those from red clover, for menopausal symptoms. This meta-analysis and systematic review provided further insights into their potential role [5]. While some earlier Cochrane reviews noted limited evidence or mixed results for phytoestrogens in general for vasomotor symptoms [PMID 17943751, PMID 24323914], more recent and specific analyses of red clover extracts have shown promising findings for hot flashes.
A prospective randomized placebo-controlled trial published in 2024 further supported the idea that isoflavones obtained from red clover may improve menopausal symptoms, in addition to potentially impacting dyslipidemia in menopausal women [6]. These findings contribute to the growing body of evidence regarding red clover isoflavones and their potential for symptom management during menopause.
Considering Dosage and Formulations
Clinical studies on red clover often use standardized extracts to ensure a consistent amount of active isoflavones. The dosage of isoflavones can vary between products and studies, which might influence observed outcomes [7]. For example, the 2017 meta-analysis highlighted the effects of a specific 80mg dosage of a standardized extract [4].
When considering red clover supplements, it can be helpful to look for products that specify the amount of total isoflavones per dose and whether they are standardized extracts, as this reflects the forms used in much of the research.
References
- Isoflavones and women’s health. Breast cancer research : BCR, 2004
- Red clover isoflavones and menopausal health. The journal of the British Menopause Society, 2004
- Evaluation of Clinical Meaningfulness of Red Clover (Trifolium pratense L.) Extract to Relieve Hot Flushes and Menopausal Symptoms in Peri- and Post-Menopausal Women: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Nutrients, 2021
- Effects of a standardised extract of Trifolium pratense (Promensil) at a dosage of 80mg in the treatment of menopausal hot flushes: A systematic review and meta-analysis. Phytomedicine : international journal of phytotherapy and phytopharmacology, 2017
- Efficacy of phytoestrogens for menopausal symptoms: a meta-analysis and systematic review. Climacteric : the journal of the International Menopause Society, 2015
- Isoflavones obtained from red clover improve both dyslipidemia and menopausal symptoms in menopausal women: a prospective randomized placebo-controlled trial. Climacteric : the journal of the International Menopause Society, 2024
- Clinical studies of red clover (Trifolium pratense) dietary supplements in menopause: a literature review. Menopause (New York, N.Y.), 2006
These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease. Content is for informational purposes only and is not medical advice; consult a qualified healthcare provider before starting any supplement. As an Amazon Associate we earn from qualifying purchases.
