Is ashwagandha or maca better for PCOS?

Neither has a PCOS trial on cycles, androgens, or insulin, so there is no evidence that either works better. They also don't work the same way: ashwagandha modulates cortisol and thyroid hormone; maca contains no measurable hormones at all.

Can I take ashwagandha and maca together?

No trial has tested the combination in anyone. They carry separate, non-overlapping risks — ashwagandha's liver and thyroid interactions, maca's raw-form goitrogen caution — so combining them adds both risk profiles rather than replacing one with the other.

Which is safer for someone with thyroid disease?

It depends on the direction of your thyroid issue. Ashwagandha has a trial showing it raises T3/T4, a risk for anyone on levothyroxine or with Hashimoto's. Raw maca can compete with iodine and theoretically lower thyroid hormone output; gelatinised maca plausibly reduces this, though it hasn't been tested directly.

Is maca safer than ashwagandha in pregnancy?

Ashwagandha has a specific, documented pregnancy gap and case reports of liver injury in people trying to conceive; maca's human trials also excluded pregnant women, but it carries no comparable liver-injury or abortifacient signal in its literature.

Do ashwagandha and maca actually balance hormones?

Ashwagandha's own evidence is about lowering cortisol, not broadly 'balancing hormones.' Maca's key trial is literally titled around symptom improvement occurring without any hormone change. 'Hormone balancer' is the shared marketing term, not a shared, tested mechanism.

Ashwagandha vs Maca for PCOS: They Are Not the Same Choice

A registered dietitian and clinician review is being arranged for this site. Until this article carries a named reviewer, treat it as a well-sourced summary of published guidance — not as a substitute for advice about your own case.

The short answer

Ashwagandha and maca are sold as interchangeable “hormone balancers,” but they share no mechanism and no PCOS evidence — maca’s entire human trial record is just 4 studies, none in PCOS. The decision that matters is safety: ashwagandha’s thyroid interaction and pregnancy contraindication versus maca’s raw-form goitrogen caution — pick based on which one you can rule out.

Are Ashwagandha and Maca Actually the Same Kind of Supplement?

No. They are two unrelated plants, marketed with the same vague “hormone-balancing” language, with almost nothing else in common. Ashwagandha (Withania somnifera) is a nightshade-family root containing steroidal lactones called withanolides, studied mainly for lowering cortisol in stressed adults. Maca (Lepidium meyenii) is a Peruvian Brassica-family root that contains no measurable estrogenic or androgenic activity in the trials that tested for it directly, studied mainly for libido and mood in men and postmenopausal women. One is a hormone-axis modulator with a documented mechanism; the other contains no hormones at all and its mechanism is genuinely unclear. Selling both under the same “balances your hormones” pitch obscures that they would need to work in completely different ways even if either one did anything for PCOS specifically.

Does Either One Have PCOS Trial Evidence?

No. Zero published human trials have tested ashwagandha’s effect on menstrual cycles, ovulation, androgens, or insulin resistance in women with PCOS, and the same is true of maca: the two systematic reviews covering maca’s entire human trial record found only four qualifying randomized trials total, none of them in a PCOS population. That means the question “which one works better for PCOS” has no evidence on either side to answer it — this comparison exists to answer a different, more useful question: given that neither is proven, which one’s risks can you rule out first?

Table 1 — ashwagandha and maca, side by side.

	Ashwagandha	Maca
Plant family	Nightshade (Solanaceae)	Brassica / cabbage family
Contains hormones?	No, but modulates cortisol and thyroid hormone	No measurable estrogenic or androgenic activity found in testing
Best-studied outcome	Cortisol reduction in stressed, non-PCOS adults	Libido and menopausal symptom scores in non-PCOS adults
PCOS trial evidence	None	None
Typical studied dose	240–600 mg standardized root extract daily	1,500–3,000 mg gelatinised root daily

Why the Thyroid Risk Is the Practical Crux for PCOS Readers Specifically

Ashwagandha and maca both carry a thyroid caution, but they are not the same caution, and the difference matters more here than on a general wellness site because Hashimoto’s thyroiditis is roughly 2.7 times more common in women with PCOS than in controls (odds ratio 2.69), pooled across 22 studies. A large share of readers comparing these two supplements are already managing a thyroid condition without realizing it is more likely, or already know they have one.

Ashwagandha’s thyroid effect is a documented, active interaction: an 8-week randomized trial found 600 mg daily significantly raised T3, T4, and improved TSH in people with subclinical hypothyroidism. That is a problem specifically if you take levothyroxine, because it means stacking a compound that pushes thyroid hormone up on top of a dose calibrated to a specific TSH target — a real interaction that can surface as heart palpitations, tremor, heat intolerance, or unintended weight loss over days to weeks, not a theoretical one.

Maca’s thyroid caution runs the opposite direction and depends on how it is processed. Raw maca contains glucosinolates that release thiocyanate and goitrin when crushed, and both compounds compete with iodine for thyroid uptake, a documented risk across the Brassica family maca belongs to — a caution about under-active thyroid function from a nutrient-competition mechanism, not an active drug-like interaction with a specific medication. Gelatinised maca’s heat processing plausibly reduces this risk but has not been tested for it directly.

Table 2 — the two thyroid cautions are not the same caution.

	Ashwagandha	Maca (raw form)
Direction of effect	Raises T3/T4, can push thyroid hormone too high	Competes with iodine, can suppress thyroid hormone synthesis
Mechanism	Direct hormonal modulation, shown in an RCT	Glucosinolate/iodine competition, general Brassica biology
Highest-risk group	People on levothyroxine or with Hashimoto’s	People with an iodine-marginal diet or undiagnosed hypothyroidism
Reduced by processing?	Not applicable	Gelatinisation plausibly reduces it; untested directly

The Other Risk That Doesn’t Overlap: Pregnancy and Liver

Beyond the thyroid, the two supplements diverge again in ways that matter for different readers. Ashwagandha has no human pregnancy safety data at all — a 2026 review found the historical abortifacient claim is more overstated than the mechanism data support, but confirmed no trial has tested it in pregnancy either way — and it carries a dedicated NIH LiverTox entry for documented cases of liver injury, some of them in people taking it specifically while trying to conceive. Maca has neither of those signals in its trial record: no liver injury case series exists for it, and its human trials, while not run in pregnant women either, come from a plant with a long dietary history as a food staple rather than a documented hepatotoxin.

Who Should Avoid Which

Table 3 — the practical decision, by reader situation.

If you…	Avoid or flag first
Take levothyroxine or have Hashimoto’s	Ashwagandha
Are pregnant, breastfeeding, or trying to conceive	Ashwagandha
Have any liver disease	Ashwagandha
Have an undiagnosed thyroid issue or low-iodine diet	Raw maca (ask for gelatinised)
Have an autoimmune condition or take an immunosuppressant	Ashwagandha
None of the above apply	Neither has PCOS evidence either way — this is a preference decision, not an evidence-based one

Do Not Expect a Winner Here

Neither ashwagandha nor maca has been shown to help PCOS specifically, and this article is not going to manufacture a winner where the trial evidence doesn’t support one. If neither risk category above applies to you, the honest answer is that you are choosing between two under-tested supplements based on cost, tolerability, or personal preference — not on evidence that either changes a PCOS outcome. If one risk category does apply to you, the decision has effectively already been made: rule out the one whose specific, documented risk you carry, not the one that sounds less effective.

You may see PCOS written as polyendocrine metabolic ovarian syndrome (PMOS), after a 2026 global consensus of more than 50 organisations renamed it. Nothing about the evidence or risk comparison above changes with the name — this article uses PCOS because that is still what most readers search.

Common questions

Is ashwagandha or maca better for PCOS?
Neither has a PCOS trial on cycles, androgens, or insulin, so there is no evidence that either works better. They also don't work the same way: ashwagandha modulates cortisol and thyroid hormone; maca contains no measurable hormones at all.
Can I take ashwagandha and maca together?
No trial has tested the combination in anyone. They carry separate, non-overlapping risks — ashwagandha's liver and thyroid interactions, maca's raw-form goitrogen caution — so combining them adds both risk profiles rather than replacing one with the other.
Which is safer for someone with thyroid disease?
It depends on the direction of your thyroid issue. Ashwagandha has a trial showing it raises T3/T4, a risk for anyone on levothyroxine or with Hashimoto's. Raw maca can compete with iodine and theoretically lower thyroid hormone output; gelatinised maca plausibly reduces this, though it hasn't been tested directly.
Is maca safer than ashwagandha in pregnancy?
Ashwagandha has a specific, documented pregnancy gap and case reports of liver injury in people trying to conceive; maca's human trials also excluded pregnant women, but it carries no comparable liver-injury or abortifacient signal in its literature.
Do ashwagandha and maca actually balance hormones?
Ashwagandha's own evidence is about lowering cortisol, not broadly 'balancing hormones.' Maca's key trial is literally titled around symptom improvement occurring without any hormone change. 'Hormone balancer' is the shared marketing term, not a shared, tested mechanism.

Your Next Step

If you take levothyroxine, have Hashimoto’s, or are trying to conceive, the full ashwagandha evidence and risk review has the case-series detail behind that caution. If a thyroid concern is what’s actually driving this comparison, the PCOS-thyroid overlap and what testing looks like is the more direct place to start. If you’re weighing either of these against something else you already take, the supplement interaction checker is faster than reading every label by hand — and the full maca evidence review covers what its own small trial record does and doesn’t show. Weighing ashwagandha against a different adaptogen instead? Ashwagandha vs holy basil runs the same risk-first comparison against tulsi.