The Definitive List of Perimenopause Supplements (Which Doesn’t Exist - But Here’s What the Science Actually Says)

We get asked this question constantly: "What supplements should I be taking for perimenopause?"

It makes sense. You’re dealing with symptoms that feel real and significant, your doctor may have offered limited guidance, and the internet serves up an overwhelming parade of confident lists. Take these seven. No, take these twelve. Here’s what Gwyneth takes. Here’s what "functional medicine doctors" recommend.

Here’s our honest answer: there is no definitive list. The women searching for one deserve better than the confident-sounding content that currently dominates this topic.

What there is, and this is genuinely useful, is a spectrum. Some supplements have solid clinical evidence in perimenopausal women specifically. Some have promising but incomplete data. Some have lots of enthusiasm and very little science behind them. And almost all of them interact with your individual biology in ways that no list can predict.

This article gives you the honest version. Sources linked to PubMed and peer-reviewed journals throughout, because you should be able to read the evidence yourself. It’s long (because we want to be thorough) so there’s a recap at the end.

What We Can Say With Reasonable Confidence

Omega-3 fatty acids (EPA + DHA)

The cardiovascular evidence for omega-3s is well-established and predates any menopause-specific research. For perimenopausal women, the more relevant findings concern mood and cognition. A 2022 systematic review covering human RCTs (randomized controlled trials, the gold standard for clinical trials) and observational studies concluded that most studies reported relief of depressive symptoms in relation to omega-3 intake. In the SWAN study, one of the largest longitudinal studies of women’s health across the menopausal transition, women who consumed more omega-3s had fewer depressive symptoms during perimenopause and the more they consumed, the greater the effect. PubMed Central.

The picture for hot flashes is less clear. In the MsFLASH trial, the largest RCT on this, 12 weeks of EPA and DHA supplementation had no effect on vasomotor symptom frequency, bother, or sleep quality. However, a separate RCT by Lucas et al. found that 8 weeks of EPA supplementation did reduce hot flash frequency and improve hot flash scores. PubMed Central and Lucas et al. (PubMed). The honest reading: omega-3s probably don’t reliably reduce hot flashes, but the brain health and mood data is genuinely encouraging, particularly for the cognitive phenotype many perimenopausal women experience. The cardiovascular support is well-established across the board and very important for women’s longevity.

A 2023 review from Harvard Medical School found that DHA supplementation in RCTs showed benefit on cognitive decline in those with mild cognitive impairment, and that in cognitively healthy adults with coronary artery disease, high-dose EPA and DHA supplementation slowed cognitive ageing by an estimated 2.5 years. PubMed. The research is not yet perimenopause-specific for cognition, but the biological rationale is strong. The brain is the organ most enriched in DHA, and estrogen decline affects DHA metabolism.

Vitamin D3

The evidence for vitamin D is as much about deficiency correction as supplementation per se. Most women in northern latitudes are deficient, and this matters more during perimenopause because estrogen normally facilitates vitamin D’s effects on calcium absorption and bone maintenance. As estrogen declines, vitamin D becomes more critical and less effective simultaneously, making deficiency more consequential. The mechanism is well-characterized. Supplementation without testing your levels first, however, is imprecise: if you’re already sufficient, additional vitamin D offers limited benefit. Test first, then dose accordingly.

Magnesium (glycinate form)

Magnesium is a cofactor for over 300 biochemical reactions, including those involved in cortisol metabolism, sleep regulation, and inflammatory signalling, all of which are disrupted during perimenopause. The best-supported application is sleep. A 2021 systematic review and meta-analysis published in BMC Complementary Medicine and Therapies found that magnesium supplementation reduced sleep onset latency by an average of 17 minutes compared to placebo, though the authors noted the trial base was small and not menopause-specific. PubMed.

What is consistent: glycinate is better absorbed and better tolerated than oxide or citrate forms. If you try one thing on this list, magnesium glycinate at 200-400mg before bed is the lowest-risk starting point with a plausible mechanism, a reasonable evidence base, and a high tolerability profile.

Creatine monohydrate

This is the supplement that surprises people most, because most people still associate creatine with male athletes. The evidence for perimenopausal women is growing quickly and is more specific than for most botanicals. A 2025 randomized, double-blind, placebo-controlled trial in perimenopausal and postmenopausal women found that medium-dose creatine hydrochloride was superior to placebo in improving reaction time, increasing frontal brain creatine levels, and favorably modulating serum lipid profiles, with a potential advantage in reducing mood swing severity. PubMed.

The muscle preservation argument has longer-standing evidence: a 2021 systematic review and meta-analysis of RCTs in older women found that creatine combined with resistance training produced significant strength gains versus training alone. The neurological rationale is also compelling: early research demonstrated a positive relationship between cerebrospinal fluid levels of creatine and dopamine and serotonin metabolites, suggesting that efficient neurotransmission of mood-affecting chemicals depends on the creatine-phosphocreatine system functioning properly. PubMed and PubMed Central. Depression rates are twice as high in women as in men, and rise specifically at hormonal milestones including perimenopause, so the creatine-mood connection is worth watching.

Standard dose: 3-5g creatine monohydrate daily. Timing doesn’t matter. Consult your doctor if you have a history of kidney disease.

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What Has Promise But Isn’t a Sure Thing

Ashwagandha (KSM-66 or Sensoril)

Of all the adaptogens marketed for perimenopause, ashwagandha has the most clinical data behind it. A randomized, double-blind, placebo-controlled study concluded that ashwagandha root extract is a safe and effective option for relieving mild to moderate climacteric symptoms during perimenopause. PubMed. The 2022 follow-up trial published in Frontiers in Reproductive Health replicated these findings, showing significant reductions in the overall Menopause Rating Scale score, including psychological, somatic, and urogenital domains, alongside improved serum estradiol, reduced FSH and LH, and reduced perceived stress scores. Frontiers in Reproductive Health and ResearchGate.

For stress and anxiety specifically, the evidence is broader than menopause. A 2024 meta-analysis of nine RCTs found a significant effect of ashwagandha on Perceived Stress Scale scores, Hamilton Anxiety Scale scores, and serum cortisol levels compared to placebo. PubMed.

The important caveats: most trials used standardized extracts (KSM-66 with >5% withanolides, or Sensoril) at 300-600mg daily. "Ashwagandha" on a generic supplement label can mean almost anything. Extract concentration, withanolide content, and manufacturing quality vary enormously. The label matters (more on this below). Also worth flagging: there are rare reports of liver toxicity with ashwagandha; it should be avoided by women with liver disease, and, like any supplement with hormone-adjacent effects, discussed with an oncologist if you have a history of hormone-sensitive cancer.

B vitamins (B6, B12, folate)

The evidence here operates via deficiency rather than supplementation per se. B12 deficiency becomes more prevalent with age, particularly in women on metformin or proton pump inhibitors, and is associated with cognitive changes that can closely mimic perimenopause brain fog. A 2025 study published in Annals of Neurology (UCSF) found that participants with B12 levels in the officially "normal" range but toward the lower end showed slower processing speeds, more white matter damage on MRI, and signs of neurodegeneration, with the authors calling for the current threshold for B12 deficiency to be revised (PubMed). If you’re experiencing pronounced cognitive symptoms, checking B12 specifically is worthwhile because your labs can look completely normal while you feel terrible, and B12 is one of the markers often missed.

B6 has demonstrated effects on anxiety and mood regulation in RCT data. It’s rarely deficient on a varied diet, but levels can be depleted by hormonal contraception, relevant for perimenopausal women who may still be on the pill or have recently stopped.

Black cohosh

The most studied botanical for hot flashes. Multiple clinical trials have shown reductions in vasomotor symptom frequency and severity. The evidence is real but uneven, some trials show significant effects, others are more modest, and we don’t fully understand the mechanism, which makes predicting individual response difficult. If you want to try a botanical for hot flashes, this has the strongest evidence base. Use a standardized extract, typically 20-40mg daily, and give it 8-12 weeks. If you have liver disease, avoid it entirely. If you have a history of hormone-sensitive cancer, consult your oncologist first.

What Probably Isn’t Worth Your Money

Evening primrose oil. Heavily marketed for menopause. The clinical evidence for hot flashes or mood is minimal, and the trials that exist are largely underpowered.

Wild yam creams. The active compound in wild yam is diosgenin, a plant steroid that chemists can use in a laboratory to synthesize progesterone. This is where the marketing claim comes from. The problem is that the human body has no enzymatic pathway to perform that conversion. This was confirmed in the only placebo-controlled RCT on the subject: a double-blind, crossover trial of 23 menopausal women found that after 3 months of wild yam cream, there were no changes in serum or salivary progesterone, estradiol, or FSH, and no statistical difference between the active cream and placebo on any symptom measure. PubMed. The marketing borrows the credibility of the lab synthesis process and applies it to human biology. Those are not the same thing.

Over-the-counter progesterone creams. Inconsistent dosing and absorption. If you need progesterone support, this is a clinical conversation, not a wellness aisle decision.

"Hormone balance" blends. Proprietary formulas combining eight to twelve ingredients at sub-therapeutic doses are doing very little except making the label look comprehensive. A single ingredient at a studied dose is almost always more useful than a blend with each ingredient at a fraction of what the trials used.

How to Actually Evaluate Any Supplement

You Need a Plan - and an Exit

One of the most common supplement mistakes isn’t choosing the wrong thing. It’s adding something without a method to evaluate whether it’s working.

You start magnesium in October. You sleep better in November. Was it the magnesium, the cooler weather, the fact that a stressful project ended? Without tracking your symptoms consistently, sleep quality, energy, mood, cognitive clarity, before and after, you can’t answer that question. And without an answer, you’ll either keep taking something that isn’t helping, or stop taking something that is.

The practical habit: when you add a new supplement, write down the date, the dose, and the two or three specific symptoms you’re monitoring. (shamless plug: just tell nova about it, she’ll create a memory for you). Check back in six weeks with something more rigorous than a general feeling. Be honest about what changed.

That discipline, systematically connecting inputs to outputs, is what separates a supplement protocol from a very expensive placebo. And build an exit. If there’s no measurable change after 6-8 weeks of consistent use at the correct dose, stop and re-evaluate. Supplements are not indefinite background noise. They should either be doing something you can identify, or they shouldn’t be there.

The Actual Definitive Answer

Here it is: the right supplement protocol for perimenopause is the one that addresses your specific symptoms, at your specific life stage, given your labs, your history, and your biology.

Which makes it different for everyone. Which is precisely why anyone handing you a universal list is giving you an approximation at best.

The useful starting point is the evidence base: omega-3s, vitamin D3 (tested first), magnesium glycinate, and creatine have the most consistent support. Ashwagandha is worth considering if stress, anxiety, or sleep are your dominant symptoms and you use a standardized extract. Everything beyond that should be treated as an experiment: structured, tracked, and time-limited.

Add one thing at a time. Track your response. Talk to your doctor before adding anything that touches hormonal pathways. And keep the exit criteria clear from the start.

For the full picture of perimenopause symptoms, and to understand how to track what’s changing, Give Zero was built for exactly this.

TL;DR - The Quick Recap

• Omega-3s (EPA + DHA): Good evidence for mood and cognitive protection. Probably won’t fix hot flashes. Take it if you don’t eat fatty fish regularly. 1-2g EPA+DHA daily.
• Vitamin D3: Test your levels first. If you’re deficient (most people are), supplementing makes a real difference for bone, muscle, and mood. If you’re sufficient, more isn’t better.
• Magnesium glycinate: Lowest-risk, highest-tolerability entry point on this list. Best evidence is for sleep and anxiety. 200-400mg before bed. Glycinate form only.
• Creatine monohydrate: More evidence than most people expect, especially for muscle preservation, brain energy, and mood. 3-5g daily, any time. Not just for athletes.
• Ashwagandha (KSM-66 or Sensoril): Best-studied adaptogen for perimenopause. Good RCT data for stress, anxiety, sleep, and overall symptom load. Extract standardization matters enormously. 300-600mg daily.
• B vitamins (B6, B12): Worth checking levels, especially B12. Deficiency mimics perimenopause brain fog and gets missed regularly.
• Black cohosh: Strongest botanical evidence for hot flashes specifically. Mixed results across trials, but worth a structured 8-12 week trial if vasomotor symptoms are your main issue. Avoid with liver disease.
• Evening primrose oil / wild yam / OTC progesterone creams: Not worth your money. The evidence isn’t there or the mechanism is biologically incorrect.
• The rule that applies to all of them: one at a time, correct dose, third-party tested, 6-8 weeks minimum, symptoms tracked before and after. If nothing changes, stop.

This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting any new supplement, particularly if you have a pre-existing condition, take prescription medication, or have a history of hormone-sensitive cancer.

Sources referenced include randomized controlled trials and systematic reviews indexed on PubMed, PMC, Frontiers in Reproductive Health, Journal of Obstetrics and Gynaecology Research, Nutrients, and Annals of Neurology.

• n-3 PUFA Improve Emotion and Cognition during Menopause: A Systematic Review
• Efficacy of Omega-3 Treatment for Vasomotor Symptoms: A Randomized Controlled Trial
• Ashwagandha for Climacteric Symptoms in Perimenopause: Randomized Controlled Study
• CONCRET-MENOPA Trial: Creatine Supplementation in Peri/Postmenopausal Women