Best Spearmint Tea Brand for PCOS: What the Label Actually Says

Is There a Single Best Spearmint Tea Brand for PCOS?

No single brand — two small trials in a combined 63 women are the entire published evidence for spearmint tea and PCOS, and neither paper names a commercial product. What they tested was a preparation: plain, steeped spearmint tea, twice a day. What sits on a supermarket shelf under “spearmint tea” ranges from that exact preparation to a five-herb blend where spearmint is the second-listed ingredient, not the first. This review checks real, currently sold products against what the trials actually used — ingredient list, whether the product is single-ingredient, loose leaf versus bag, and whether the species is named on the label — not price, star rating, or review count, none of which is invented here.

Disclosure: some links on PCOSguides may earn an affiliate commission if you buy a product through them. That does not change the comparisons below, and no product named here is a recommendation to buy it over another. Full affiliate disclosure.

You may see PCOS referred to as polyendocrine metabolic ovarian syndrome (PMOS), the name a 2026 global consensus of more than 50 organisations gave the same condition. Nothing about the trial or product data below changed with the rename; this article uses PCOS because that is still what most readers search.

What Did the Two PCOS Spearmint Trials Actually Use?

Forty-two women drank spearmint tea twice daily for 30 days in the trial that produced spearmint tea’s PCOS reputation, and a second, five-day trial in 21 more women is the only other published human data. Free and total testosterone dropped in the 30-day trial, but the objective hirsutism score did not move in that window — the full hormone-versus-hirsutism results are covered elsewhere on this site rather than repeated here. What matters for this review is narrower: what, exactly, did either trial hand its participants to drink.

Neither paper reports the brand, the dry-leaf weight per serving, or the exact steep time — a gap already named in spearmint tea’s dose-variability problem. That means no commercial product can claim to be “the trial’s tea.” The most a label can do is match the trial’s form: plain spearmint leaf, steeped in hot water, nothing else in the cup.

Which Real Products Are Single-Ingredient Spearmint — and Which Are Blends?

Two of the five widely sold teas checked here list spearmint leaf as their only ingredient; the other three name peppermint, field mint, or an unspecified “mint” ahead of, or instead of, spearmint. Traditional Medicinals’ Organic Spearmint tea bags list a single ingredient on the label: organic spearmint leaf. Celebration Herbals’ Organic Spearmint Leaf Tea goes further and names the species directly on its ingredient line — organic spearmint leaf, Mentha spicata — with no added flavoring or filler herb.

The other three do not match that pattern. Bigelow’s Mint Medley Herbal Tea lists its ingredients, in order, as peppermint leaves, spearmint leaves, rose hips, lemon peel, hibiscus — five ingredients, with peppermint named first. Pukka’s Three Mint tea states its composition directly on the label as percentages: 45% peppermint leaf, 39% green mint (spearmint) leaf, 16% field mint leaf — a third mint species neither trial tested, in a blend where peppermint is the single largest component. Numi’s Moroccan Mint lists its ingredient simply as “organic mint,” without naming a species at all, though the brand’s own product page confirms it is caffeine-free rather than a green-tea base.

Read the current label on whatever box you are holding before buying any of these — brands reformulate, and a percentage or an ingredient can change after this was checked. What should not change is the method: read the ingredients line itself, in order, rather than trusting a product name that says “mint” or “spearmint” on the front of the box.

Why a Peppermint-Dominant Blend Isn’t Just “Less Spearmint”

Forty-five percent of Pukka’s Three Mint blend is peppermint leaf, and that is not a rounding difference from spearmint — peppermint (Mentha piperita) and spearmint (Mentha spicata) are different plants, chemically dominated by different compounds (menthol in peppermint, carvone in spearmint), and no published PCOS trial has tested peppermint at all. A 2004 rat study that tested both mints side by side found spearmint’s effect on testicular tissue was more severe than peppermint’s at a matched concentration — direct evidence, in at least one animal model, that the two are not interchangeable, whatever else they share as close botanical relatives.

That gap between label and content is not unique to mint. A DNA metabarcoding study of 15 commercial herbal tea products found that, on average, only about 70% of a product’s declared ingredients could be confirmed genetically, with several products also containing undeclared plant material not listed on the label at all. That study could not resolve mint samples down to species — spearmint and peppermint are genetically too close for its method — so it cannot say which specific spearmint products are mislabeled. What it does support is the broader habit this article is built on: read the actual ingredients line, on the actual current box, rather than trusting a category name like “mint tea” to describe what’s inside.

Does a Single-Ingredient Product Guarantee the Trial’s Result?

No — 30 days was long enough for the Grant trial to lower blood testosterone but not long enough to move the objective hirsutism score, and that gap has nothing to do with which brand of tea anyone drinks. Buying Traditional Medicinals or Celebration Herbals over a peppermint-heavy blend gets you closer to the form the trials tested — plain spearmint leaf, steeped, nothing else in the cup — but neither brand has been tested directly, and neither trial reported the dry-leaf weight or steep time a manufacturer would need to match precisely. The realistic hormone-and-hirsutism timeline is covered in full there rather than repeated here.

What to Actually Check on a Spearmint Tea Label

Four things on a box are checkable without trusting a single marketing claim on the front of it:

• The ingredients line, in order. Ingredients are listed by descending weight. A “spearmint tea” that lists peppermint first — like Bigelow’s Mint Medley — is telling you, on its own label, that peppermint outweighs spearmint in the box.
• Whether the species is named. “Organic spearmint leaf (Mentha spicata),” as Celebration Herbals prints it, is a stronger match to the trials’ plant than a label that just says “mint,” as Numi’s does.
• Loose leaf versus bag. Neither trial specified which form was used, so this is a preference question, not a trial-matching one — but a bag with visible plant matter, rather than fine dust, is easier to confirm as whole-leaf spearmint rather than a ground blend.
• Organic certification. A real, checkable claim on a label — it confirms growing practice, not that the product matches either trial’s protocol, and it is worth checking directly against the certifying body rather than trusting a badge in a listing photo.

Price and current stock are worth checking directly on the retailer’s own current listing rather than relying on a number printed here, since both change after this was written.

Who This Won’t Help

Even the closest label match to either trial does not turn spearmint tea into a treatment for everyone reaching for it.

• Anyone whose hirsutism isn’t androgen-driven. As covered for hirsutism generally, a tea that lowers circulating androgens has nothing to act on if androgens are not the underlying driver of the hair growth pattern in the first place.
• Anyone wanting a fast result. The only trial that measured hair growth directly found no significant change in the objective score after 30 days — no brand changes that timeline, because it reflects how a hair follicle’s growth cycle actually works, not the product in the cup.
• Anyone drinking a multi-herb blend for its spearmint content specifically. Pukka’s Three Mint and similar blends carry field mint and other companion herbs alongside spearmint; none of those additional plants were part of either trial, and their own effects and interactions are separate questions this review does not answer.
• Anyone pregnant, trying to conceive, or breastfeeding. Neither trial measured ovulation, cycle length, or pregnancy outcomes in any brand or preparation — spearmint tea and fertility, examined in full, covers what is and isn’t known.
• A replacement for medical anti-androgen treatment. Nothing compared on this page approaches the effect size of the options covered in hirsutism and PCOS, and reaching for a better-matched tea box is not a reason to delay that conversation if hirsutism is significantly affecting you.

Common questions