Does maca work for menopause symptoms?

Our verdict: Limited evidence — early, small trials show a favorable signal, but the reviewers themselves say it's not enough to conclude maca works.

Maca (Lepidium meyenii), a root vegetable traditionally used in the Andes, is marketed widely for menopause symptoms and libido. The actual clinical evidence is thinner than the marketing suggests, but it's not nothing either — which makes it a useful example of what "limited evidence" really means.

What the systematic review actually found

A systematic review searched 17 databases and identified 4 randomized controlled trials that compared maca against placebo for menopausal symptoms in healthy peri- and postmenopausal women. Using two standard menopause symptom scales (the Kupperman Menopausal Index and the Greene Climacteric Score), all 4 trials showed a favorable effect of maca over placebo.

That might sound like a clear win — but the reviewers' own conclusion is much more cautious. They state there have been "very few rigorous trials," and that the total number of trials, total sample size, and average methodological quality were too limited to draw firm conclusions. They also explicitly note that maca's safety has not yet been proven, and call for larger, better-designed studies before anything more confident can be said.

Why 4-for-4 positive trials still isn't "proven"

This is a useful case for understanding evidence grading: having every available trial point in the same favorable direction is a genuinely encouraging signal — but when there are only 4 small trials with quality concerns, even a consistent result can still be too thin to build a confident recommendation on. A larger, well-designed trial could confirm this signal, find it was overstated, or find real safety concerns that smaller trials weren't positioned to catch. Until that happens, the honest answer is "early positive signal," not "proven to work."

What to consider before trying it

• Safety hasn't been established in rigorous trials, per the review itself — this matters more for an unregulated supplement than for a drug approved by a regulator
• Dosing and preparation varied across the 4 trials, so there's no single confirmed "effective dose" to point to
• If you want options with a larger, independently reviewed evidence base, see our does it work? evidence checker or explore non-hormonal prescription options for hot flashes specifically
• For a similarly early-stage, small-trial evidence picture, compare this against our ashwagandha verdict