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Menopause supplements: what works, what doesn't, and what is risky

Most supplements sold for menopause are unproven, and a few carry real risks. A small number of nutrients are worth getting right, preferably from food.

Reviewed by Claudia Muresian, health psychologist, fitness coach and healthy nutrition specialist Researched and drafted by the Fit Over 40 editorial team. Last updated November 11, 2026. 7 minute read. How we research and review

The short version

  • The National Institute on Aging says black cohosh, DHEA and soy isoflavones are unproven for hot flashes, and some carry risks such as liver damage.
  • The Menopause Society does not recommend supplements or herbal remedies as treatments for hot flashes.
  • Calcium and vitamin D matter for bone after 50, with clear daily targets and upper limits.
  • Magnesium from supplements should stay under 350 mg a day and can interact with several medicines.
  • Omega-3 supplements are not recommended for people without high cardiovascular risk. Eating fish once or twice a week is.

The short table

SupplementSold forWhat the evidence says
Black cohoshHot flashesUnproven. Possible risk of liver damage.1
Soy isoflavones, phytoestrogensHot flashesInconsistent benefit. Long-term safety unclear.1
DHEAHot flashes, energyUnproven.1
CalciumBonesNeeded: 1,200 mg a day from 51. Food first. Not clear that supplements prevent fractures.3
Vitamin DBones800 to 1,000 IU a day from 51. Do not exceed 4,000 IU without medical advice.4
MagnesiumSleep, cramps, bonesWomen need 310 to 320 mg a day in total. Linked to bone density, but more research is needed.5
Omega-3 (fish oil)Heart, jointsLowers triglycerides. Not recommended as a supplement for people without high cardiovascular risk.6

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Herbs sold for hot flashes

The National Institute on Aging is direct: black cohosh, DHEA and soy isoflavones are unproven, some carry risks such as liver damage, and phytoestrogens have shown inconsistent benefits with unclear long-term safety.1 The Menopause Society reviewed the trials in 2023 and placed supplements and herbal remedies on its "not recommended" list for hot flashes.2

Treatments that did make the recommended list include cognitive behavioral therapy, clinical hypnosis and several prescription medicines. See hot flashes without hormones.

Calcium and vitamin D

These two have firm targets because bone loss speeds up around menopause. Women need 1,200 mg of calcium a day from age 51, with an upper limit of 2,000 mg from all sources.3 US guidance suggests 800 to 1,000 IU of vitamin D for adults over 50.4 Full details and food sources are in calcium and vitamin D after menopause.

Magnesium

  • How much: 310 to 320 mg a day for women, from food and supplements together.5
  • Food sources: beans, nuts, seeds, whole grains, leafy greens, and milk or yogurt.5
  • Supplement limit: 350 mg a day from supplements and medicines. Food does not count toward this limit.5
  • Side effects: diarrhea, nausea and cramping at high doses.5
  • Interactions: osteoporosis medicines called bisphosphonates, some antibiotics, certain diuretics, and long-term acid reflux drugs.5

Omega-3

Eating fish is linked to heart benefits, and the American Heart Association advises one to two servings of seafood a week. It does not recommend omega-3 supplements for people without high cardiovascular risk.6 If you take a blood thinner such as warfarin, ask your doctor before using fish oil, because high doses may raise bleeding risk.6 Easy ways to eat more fish: baked salmon and sardines on toast.

Protein powder

Protein powder is food in a convenient form, not a menopause treatment. It can help you reach your daily protein target if meals fall short. See how much protein women over 50 need.

How to use any supplement safely

  1. Tell your doctor and pharmacist everything you take. "Natural" products can interact with prescription medicines.
  2. Check the dose against the upper limit, counting all your products together.
  3. Look for an independent quality seal, such as USP Verified, on the label.
  4. Be wary of blends that hide amounts behind the words "proprietary formula."
  5. Stop and seek advice if you notice yellowing skin, dark urine, unusual tiredness or stomach pain.

We have not yet reviewed creatine, collagen or ashwagandha, so this guide does not make claims about them.

Common questions

What is the best supplement for menopause?

No supplement has been shown to treat menopause as a whole. Specialist guidance does not recommend any supplement or herbal remedy for hot flashes. The nutrients with clear targets after 50 are calcium and vitamin D, and food is the preferred source.2,3

Is black cohosh safe?

It is unproven for hot flashes, and the National Institute on Aging notes that some of these products carry risks such as liver damage. Do not take it without talking to your doctor, especially if you have liver problems.1

Does magnesium help menopause sleep?

The NIH fact sheet on magnesium does not list sleep among its established uses. If you try it, stay under 350 mg a day from supplements and check for interactions with your medicines.5

References

  1. National Institute on Aging. Hot flashes: what can I do? https://www.nia.nih.gov/health/menopause/hot-flashes-what-can-i-do
  2. The 2023 nonhormone therapy position statement of The North American Menopause Society. Menopause. 2023;30(6):573-590. https://pubmed.ncbi.nlm.nih.gov/37252752/
  3. National Institutes of Health, Office of Dietary Supplements. Calcium: fact sheet for consumers. https://ods.od.nih.gov/factsheets/Calcium-Consumer/
  4. MedlinePlus, US National Library of Medicine. Calcium, vitamin D, and your bones. https://medlineplus.gov/ency/patientinstructions/000490.htm
  5. National Institutes of Health, Office of Dietary Supplements. Magnesium: fact sheet for consumers. https://ods.od.nih.gov/factsheets/Magnesium-Consumer/
  6. National Institutes of Health, Office of Dietary Supplements. Omega-3 fatty acids: fact sheet for consumers. https://ods.od.nih.gov/factsheets/Omega3FattyAcids-Consumer/
About this article

Every health claim above links to its source. Before publication the article was read and approved by Claudia Muresian, health psychologist, fitness coach and healthy nutrition specialist. It is general information and cannot take your personal history into account, so use it to prepare for a conversation with your own clinician.

Spotted an error? Tell us and we will check it.

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