Wild Clover Plant Health Benefits: What the Evidence Actually Shows

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If you are here because someone told you wild clover fixes hot flashes, thins the blood, clears the skin or cures cataracts, here is the short version: only one of those claims has been tested properly in humans, and even that one is contested. Wild clover is another name for red clover (Trifolium pratense), and the wild clover plant health benefits that survive contact with the evidence are narrower than the folklore suggests — but they are not nothing.

The plant contains isoflavones, which are structurally similar to oestrogen [NCCIH, 2025]. That single fact explains almost everything worth knowing about it: why it has been studied for menopausal symptoms, why it might nudge cholesterol, and why it is the wrong plant for some people to take at all.

What wild clover actually is

Wild clover, red clover, cow clover, purple clover and meadow clover are all the same species: Trifolium pratense, a legume in the pea family [NCCIH, 2025]. It grows 6 inches to 2 feet tall, throws up pink-purple flower heads with a honey-like scent, and carries a pale chevron on the upper surface of each leaflet — the marking that gives it away in a meadow [NC State Extension, Trifolium pratense].

The chevron is also, for centuries, the reason people believed the plant treated cloudy vision. It does not. That belief came from the doctrine of signatures — the old idea that a plant’s appearance advertises what it heals — and it has no bearing on what the plant does in the body.

What the plant does contain are isoflavones, chiefly formononetin and biochanin A, with smaller amounts of genistein and daidzein. The first two are converted in the gut and liver into the active forms. These compounds bind oestrogen receptors, with a stronger preference for ER-beta than ER-alpha [Kanadys et al., Nutrients, 2021]. Weak oestrogen-like activity is the mechanism behind every plausible benefit on this page — and behind every serious caution.

Wild clover plant health benefits, graded honestly

Here is the whole picture at a glance, before we get into the detail.

Claim	Strength of evidence	What that means in practice
Reduces hot flashes / night sweats	Mixed. Meta-analyses disagree; high heterogeneity.	May help some women modestly. Not reliable, and not comparable to HRT.
Lowers total cholesterol	Limited and inconsistent.	One pooled analysis found a small drop in total cholesterol; LDL and HDL were unchanged.
Protects bone density	Insufficient. Few studies, inconsistent results.	No basis for using it to prevent or treat osteoporosis.
Eases eczema, psoriasis, skin irritation	Traditional use only. No controlled human trials.	A long folk history is not evidence of effect.
Relieves coughs, bronchitis, hoarseness	Traditional use only.	No clinical trials support this.
Settles diarrhoea, gastritis, poor appetite	Traditional use only.	No clinical trials support this.
Clears cataracts or eye “cloudiness”	No evidence.	Cataracts are treated surgically. Do not delay an eye exam.
Prevents or treats cancer	No evidence, and a potential risk.	Red clover is oestrogenic and is contraindicated in hormone-sensitive cancers.

Hot flashes and night sweats: genuinely mixed

This is the only use with a real body of randomised trials behind it — and the trials do not agree.

A 2021 meta-analysis pooled eight trials (ten comparisons) and found that women taking red clover isoflavones had about 1.7 fewer hot flashes per day than women on placebo (weighted mean difference −1.73; 95% CI −3.28 to −0.18; p = 0.03) [Kanadys et al., Nutrients, 2021]. That sounds encouraging until you look at the spread: heterogeneity was 87%, meaning the trials were pulling in quite different directions. The confidence interval nearly touches zero. And the subgroup that looked most promising — doses of 80 mg a day or more — was not statistically significant on its own (p = 0.12).

The Cochrane review reached a different conclusion. Pooling five trials of Promensil, a standardised red clover extract, it found no significant difference in daily hot flush frequency versus placebo (mean difference −0.93; 95% CI −1.95 to 0.10) and concluded there was no conclusive evidence that phytoestrogen supplements reduce hot flashes or night sweats [Cochrane review of phytoestrogens for vasomotor symptoms, 2013]. The same review noted something that should give anyone pause: across the included trials, placebo alone reduced hot flush frequency by anywhere from 1% to 59%.

The NHS is blunter still. It lists red clover among herbal remedies for menopause and states there is no strong evidence that it works [NHS guidance on menopause treatment, reviewed 2022]. NCCIH, reviewing the same field, says the research has not shown conclusive evidence of benefit for any health condition, and that some of the hot-flash studies carried a high risk of bias [NCCIH, 2025].

So: two respected analyses of overlapping trial sets came to opposite verdicts. That is not a reason to dismiss red clover, and it is not a reason to buy it. It is a reason to keep your expectations small and your timeline short — try it for a defined period, track your symptoms, and stop if nothing changes. If your symptoms are disrupting your sleep or your work, the conversation to have is with a clinician about hormone therapy and the non-hormonal prescription options, which have far stronger evidence behind them. Our overview of natural remedies for night sweats compares red clover against black cohosh, soy and the others on the same evidence scale.

Cholesterol: a small signal, not a treatment

A 2020 systematic review and meta-analysis of 10 studies in 910 peri- and postmenopausal women found red clover extract was associated with a significant reduction in total cholesterol — but no significant effect on LDL or HDL [NCCIH Clinical Digest on high cholesterol, 2024]. NCCIH’s own summary of the wider literature calls the findings on cholesterol conflicting, and says more research is needed before firm conclusions can be drawn [NCCIH, 2025].

Read that as: a small, uncertain nudge to one number on a lipid panel. It is not a reason to stop a statin, and it is not a cholesterol treatment.

Bone density: not enough studies to say

Only a handful of trials have looked at red clover and bone density in postmenopausal women, and the results have been inconsistent [NCCIH, 2025]. If you are worried about osteoporosis, this is not the intervention to reach for. A DEXA scan and a conversation about calcium, vitamin D, resistance training and — where appropriate — prescription therapy will serve you far better.

Skin, cough and digestion: tradition, not evidence

Red clover has a long history of topical and internal use for skin complaints such as eczema and psoriasis, and for whooping cough and mastitis [Memorial Sloan Kettering, About Herbs, 2022]. Traditional European herbalism also used decoctions as compresses for skin irritation and inflammation, and internally for coughs, hoarseness and digestive upset.

None of that has been tested in controlled human trials. A folk use can be centuries old and still be wrong — the cataract story on this very plant is proof. If you want to explore plants with a topical tradition behind them, our guide to herbs for skin conditions sets out what each one is actually claimed to do, but the same caveat applies throughout: tradition is a hypothesis, not a result.

Doses used in the research

This is descriptive, not a recommendation. Across the 12 randomised trials in the 2021 meta-analysis, the average daily dose was 65 mg of isoflavones (aglycone equivalent), with a range of 37 to 160 mg. Trials ran from 12 weeks to two years. The subgroup analyses that looked most favourable involved postmenopausal women having at least five hot flashes a day, taking 80 mg or more daily, assessed at 12 weeks [Kanadys et al., Nutrients, 2021].

Two practical points follow. First, supplements are not standardised the way medicines are — the isoflavone content of a capsule depends on the extract, and two products at the same milligram count are not necessarily equivalent. Second, if you are going to try it, give it about 12 weeks and keep a simple symptom diary. If there is no change by then, there probably will not be one.

Traditional preparations — a decoction of the flowers and leaves, drunk as a tea or used as a compress — deliver a completely unknown isoflavone dose. They have not been studied. Nothing in the trial literature transfers to them.

Safety, side effects and who should avoid wild clover

In clinical studies, red clover extracts have been used for up to two years and appear to be well tolerated [NCCIH, 2025]. The Cochrane review found no evidence of oestrogenic stimulation of the womb lining or vagina, or other adverse effects, with use up to two years [Cochrane review of phytoestrogens for vasomotor symptoms, 2013]. That is genuinely reassuring as far as it goes. It does not extend to indefinite use, and Memorial Sloan Kettering states plainly that the safety of long-term use is not known [Memorial Sloan Kettering, About Herbs, 2022].

Side effects

No consistent pattern of common side effects has been established, and MSK’s monograph reports none [Memorial Sloan Kettering, About Herbs, 2022]. That is partly a compliment to the plant and partly a gap in the literature: a 2021 review found that 42% of the trials it assessed carried a high risk of bias specifically because they failed to report adverse effects at all [Kanadys et al., Nutrients, 2021]. “No side effects reported” and “no side effects occur” are not the same sentence.

Interactions and cautions

Medicine or condition	The concern	How solid is it?
Warfarin, other anticoagulants, antiplatelets	Possible increased bleeding risk.	Preclinical signal; clinical relevance not established. Case reports of subdural haematoma and subarachnoid haemorrhage exist. Treat as a real caution.
Methotrexate	A case of methotrexate-like toxicity (severe vomiting, epigastric pain) was reported.	Single case report. Enough to warrant avoiding the combination.
Hormone-sensitive cancers (some breast, uterine, ovarian)	Red clover is oestrogenic and may worsen the condition.	Stated contraindication. Avoid unless your oncologist says otherwise.
Tamoxifen, aromatase inhibitors, HRT, oral contraceptives	Theoretical interference through oestrogen-receptor activity.	Not well studied. Ask your prescriber before combining.
Drugs cleared by CYP450 enzymes	Lab studies show red clover inhibits CYP1A2, 2C8, 2C9, 2C19, 2D6 and 3A4.	Preclinical only; clinical relevance undetermined. Worth flagging to a pharmacist if you take several medicines.
Pregnancy and breastfeeding	May not be safe.	Avoid supplements. Do not eat the flowers.

The bleeding question deserves a note of its own, because the sources genuinely differ in emphasis. The interaction between red clover and anticoagulants is described as preclinical, with clinical relevance not yet determined. But there are also published case reports of serious bleeding — a subdural haematoma in a woman whose only bleeding risk factor was long-term red clover use, and a subarachnoid haemorrhage in a woman taking a supplement that combined red clover with dong quai and Siberian ginseng [Memorial Sloan Kettering, About Herbs, 2022]. Case reports cannot prove causation. They are also not nothing. If you take warfarin or any other blood thinner, or you have surgery scheduled, do not start red clover without asking your prescriber.

Who should not take it

• Anyone who is pregnant or breastfeeding. Supplements may be unsafe, and the flowers should not be eaten either.
• Anyone with a hormone-sensitive cancer — including some breast, uterine and ovarian cancers — unless their oncologist has specifically approved it.
• Anyone taking warfarin or another anticoagulant or antiplatelet drug, without medical sign-off.
• Anyone on methotrexate.
• Anyone with surgery coming up in the next two to four weeks.
• Children. It has not been studied in them, and its hormonal activity is a reason for caution.

Is it safe to eat wild clover from the garden?

The leaves and flowering heads of red clover are edible, raw or cooked, and young leaves are traditionally used in salads or cooked like spinach [NC State Extension, Trifolium pratense]. Two caveats, both worth taking seriously. The flowers are not easily digestible in quantity. And pregnant and breastfeeding women should not eat the flowers at all [NC State Extension, Trifolium pratense].

Beyond that, ordinary foraging sense applies: know the plant before you pick it, avoid roadside verges and anywhere that may have been sprayed, and remember that a handful of clover in a salad has nothing in common, pharmacologically, with an 80 mg standardised isoflavone capsule.

What about white clover?

White clover (Trifolium repens) is the low, mat-forming clover with round white flower heads and a white crescent on each leaflet — the one most people have in their lawn. It is a different species from red clover: shorter, creeping, rooting at the nodes [NC State Extension, Trifolium repens]. All parts are edible, raw or cooked; the dried flowers are used in tea and the young leaves in salads.

It is sometimes described as having the same medicinal uses as red clover, including an antirheumatic effect in bathwater. There is no clinical trial evidence for any of that. White clover has not been studied in people the way red clover has, and its isoflavone profile is not interchangeable. Treat any claim about white clover as unsupported until someone tests it.

When to stop and see a professional

Herbs are a reasonable thing to try for mild, well-understood symptoms. They are a bad thing to hide behind. Get medical attention promptly for any of the following.

• Any vaginal bleeding after menopause — even once, even spotting, even if it is only pink or brown discharge, and even if you feel completely well. It is usually not serious, but it can be a sign of cancer, and cancer found early is more treatable [NHS guidance on postmenopausal bleeding, reviewed 2023].
• Unusual bruising, prolonged bleeding from small cuts, black or tarry stools, or a sudden severe headache while taking red clover — stop it and seek urgent care.
• A new breast lump, breast pain or nipple change.
• Night sweats with unexplained weight loss, fever or swollen glands — these need a diagnosis, not a supplement.
• Vision changes, cloudiness or glare. Cataracts are diagnosed and treated by an eye specialist. No plant is going to clear them.
• Symptoms that are wrecking your sleep, mood or ability to work. There are treatments with far better evidence than this one. You do not have to tough it out.

And before you start: tell your doctor or pharmacist. That single step catches most of the interaction risk on this page. If dizziness or unsteadiness is part of your picture, our article on natural remedies for dizziness during menopause covers when that symptom needs investigating rather than self-treating. For a broader look at plants used across women’s health, see our guide to powerful herbs for women.

HEALTH DISCLAIMER: This article is for general education. It is not medical advice, and it is not a substitute for diagnosis or treatment by a qualified clinician. Wild clover (red clover) is a hormonally active plant. Talk to your doctor or pharmacist before taking it if you are pregnant or breastfeeding, take any prescription medicine (especially blood thinners, methotrexate, or hormone therapy), have a hormone-sensitive cancer, or have surgery coming up. Do not use it to replace a treatment you have been prescribed, and do not use it to postpone getting a symptom looked at.

Frequently Asked Questions

References

1. National Center for Complementary and Integrative Health (NCCIH). “Red Clover: Usefulness and Safety.” U.S. National Institutes of Health, last updated April 2025.  View source
2. Lethaby A, Marjoribanks J, Kronenberg F, Roberts H, Eden J, Brown J. “Phytoestrogens for menopausal vasomotor symptoms.” Cochrane Database of Systematic Reviews, 2013, Issue 12, Art. No. CD001395. DOI: 10.1002/14651858.CD001395.pub4.  View source
3. Kanadys W, Baranska A, Blaszczuk A, Polz-Dacewicz M, Drop B, Kanecki K, Malm M. “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;13(4):1258. DOI: 10.3390/nu13041258.  View source
4. Memorial Sloan Kettering Cancer Center. “Red Clover.” About Herbs, Botanicals & Other Products, last updated 10 February 2022.  View source
5. NCCIH Clinical Digest. “High Cholesterol and Natural Products: What the Science Says.” February 2024.  View source
6. NHS. “Menopause — Treatment.” NHS.uk, page last reviewed 17 May 2022.  View source
7. NHS. “Postmenopausal bleeding.” NHS.uk, page last reviewed 22 May 2023.  View source
8. North Carolina Extension Gardener Plant Toolbox. “Trifolium pratense (Red Clover).” NC State Extension.  View source
9. North Carolina Extension Gardener Plant Toolbox. “Trifolium repens (White Clover).” NC State Extension.  View source