Do menopause supplements work? What the evidence says, ingredient by ingredient

Name: Do menopause supplements work? What the evidence says, ingredient by ingredient
Creator: MenoWoman

Most menopause supplements have weak or mixed evidence, and none works as well as hormone therapy. A few, such as some black cohosh and rhubarb extracts, have small trials, but safety and drug interactions matter as much as benefit.

Researched by the MenoWoman team. Edited by Marcela Sat. Updated 7 November 2026. We may earn from links.

Stop the supplement and get medical help for yellow skin or eyes, dark urine, belly pain or unusual tiredness. Also see a doctor for bleeding after menopause, or before taking any supplement if you take prescription medicines, have liver disease or have had breast cancer.

Do menopause supplements work?

For most products, the honest answer is "probably not much." The Australasian Menopause Society says no complementary therapy is as effective as estrogen-based hormone therapy.³

In 2023, The Menopause Society reviewed non-hormone options for hot flashes (hot flushes in the UK). It did not recommend supplements, herbal remedies or soy products.⁴

Part of the problem is the research. Many trials are small, short and run by the makers of the product. Results often differ between studies.^1,3

Which supplements are worth it? The best-studied ingredients

Black cohosh is the most studied herb. A 2012 Cochrane review of 16 trials found too little evidence to say it works. Two good trials found no clear benefit over placebo.² The Australasian Menopause Society notes one review where some higher-dose extracts may help.³

Soy isoflavones and red clover contain plant estrogens. Results have been inconsistent.¹ Some red clover extracts may reduce hot flash frequency, and equol (made from soy by some people's gut bacteria) may help some women.³

Siberian rhubarb extract (ERr 731) reduced symptom scores in a pooled analysis. Long-term benefit and safety still need study.³

Evening primrose oil, ashwagandha, magnesium, maca, ginseng, pollen extract and wild yam have little or no evidence for hot flashes.³ Flaxseed did no better than placebo in older trials.¹

So which supplements are worth it? None is a proven fix. If you want to try one, choose an ingredient with at least some trials and agree a trial period with your doctor or pharmacist.

Supplement safety: black cohosh and the liver

Natural does not mean safe. Over-the-counter products are not tested as strictly as medicines and may contain contaminants.³

At least 83 cases of liver injury have been reported worldwide in people taking black cohosh. It is not proven that black cohosh caused them, and some products may have been mislabeled or contaminated.² Later reviews did not support the early liver fears, but long-term data are limited.³

Australia requires a liver warning on black cohosh labels. The US Pharmacopeia advises people with liver problems to avoid it.² Seek care quickly for belly pain, dark urine or yellow skin.¹

Other supplements carry their own risks. Kava has been linked to severe liver disease, and DHEA may harm the liver.¹ Australia's medicines regulator has warned about liver damage with ashwagandha.³

Drug interactions: St John's wort and others

St John's wort is sometimes added to menopause blends for mood. It interacts with many medicines.^3,5

Mayo Clinic lists interactions with antidepressants, warfarin, some statins, HIV medicines and transplant medicines. It can make birth control pills less reliable.⁵ This matters because pregnancy is still possible in perimenopause.

Dong quai and high-dose vitamin E may interact with warfarin and raise bleeding risk.¹ Evening primrose oil can interfere with seizure medicines.³

Soy-based products may not be suitable for women with a history of blood clots, heart disease or hormone-sensitive cancer.¹ Always tell your doctor and pharmacist about every supplement you take.¹

How to choose, and where to start

Read labels for the exact extract and amount. Terms such as "standardized" or "certified" do not guarantee quality.¹ Branded extracts differ, so trial results for one product may not apply to another.²

Our supplements product page lists brands with their own claims, such as black cohosh and pollen extract products. These are brand claims, not our verdicts.

If hot flashes or night sweats affect your life, ask about treatments with strong evidence. These include hormone therapy, non-hormonal prescription treatments and CBT.⁴

What it is used for: evidence rated

Option	Evidence	What the research shows
Black cohosh	Weak evidence	A Cochrane review found too little evidence; good trials showed no clear benefit over placebo. Rare liver injury reports.^2,3
Soy isoflavones	Weak evidence	Results are inconsistent, and The Menopause Society does not recommend soy for hot flashes.^1,4
Red clover	Weak evidence	Some extracts may reduce hot flash frequency at higher isoflavone amounts; studies are limited.³
Siberian rhubarb (ERr 731)	Weak evidence	A pooled analysis showed lower symptom scores, but long-term benefit and safety need more research.³
St John's wort	Weak evidence	One small trial, combined with black cohosh, showed benefit for menopausal mood symptoms; it interacts with many medicines, including birth control.^3,5
Evening primrose oil	Weak evidence	Mixed or no benefit for hot flashes, and it can interfere with seizure medicines.³
Ashwagandha	Weak evidence	Only one small, short study for menopause symptoms; a regulator has warned about liver damage.³
Magnesium	Weak evidence	Little or no evidence for hot flashes, according to the Australasian Menopause Society.³

Ratings explained: how we rate. Always talk to a doctor or pharmacist before starting a medicine or supplement.