We ran 11 cortisol supplements through the clinical-trial criteria.
Most failed. Here’s the one that didn’t.

The most-searched ashwagandha product in the United States and the example most people picture when they think “ashwagandha gummy.” Per Goli’s own product page as of May 25, 2026: 300 mg of KSM-66 ashwagandha root extract per serving of two gummies (so 150 mg per gummy), delivered in a matrix of cane sugar, tapioca syrup and pectin. The recommended dose is two gummies twice daily, which lands at 600 mg/day total — right at the clinical threshold. The supplement-facts panel lists root extract (KSM-66 is a root-only standardised extract) and does not list piperine or any black-pepper co-factor. The KSM-66 used here is the standard (non-organic) extract; the product page does not state a organic root.

Against the four criteria: dose ✓ (at threshold at the full recommended daily intake), form ✓ (KSM-66 root), absorption ✗, organic ✗. 2 of 4.

A reputable basic-supplement brand at a low price point. Per NOW’s own product page as of May 25, 2026: 450 mg of ashwagandha extract per capsule, recommended one capsule two to three times daily— so the manufacturer’s own daily intake is 900–1,350 mg, well above the 600 mg trial threshold. NOW manufactures in an NPA-certified GMP facility, but the ashwagandha listed here is a standard (non-organic) root extract — the product page doesn’t state a organic root. No piperine pairing on the label.

Against the four criteria: dose ✓ (well above threshold at the recommended 2–3 caps/day), form ✓ (ashwagandha extract per the label), absorption ✗, organic ✗. 2 of 4 — a solid budget pick on dose and form.

We included Onnit New Mood because it is one of the most commonly cross-shopped products in the cortisol/stress search space — but per Onnit’s own product page as of May 25, 2026, the formulation is not an ashwagandha product. The label lists chamomile flower, lemon balm, valerian root, 5-HTP and L-tryptophan as the actives. Ashwagandha is not in the ingredient list. The product is positioned for mood and sleep onset, not cortisol-baseline regulation.

Against the four criteria (evaluating as an ashwagandha cortisol product, which it is not): all four bars are not applicable. 0 of 4. A legitimate sleep/mood product in its own right; just aimed at a different mechanism than the one this article is auditing for.

A multi-herb adaptogen blend, and the one genuinely organic formula among the mass-market options here. Per Gaia’s product page as of May 25, 2026, the formula contains Siberian rhodiola root extract, holy basil leaf supercritical CO₂ extract, and an “Herbal Extract Blend” combining organic oats milky seed, holy basil leaf, schisandra berry and ashwagandha root extract — with no per-ingredient dose disclosed for the items inside the blend. Gaia formulates with organic herbs, which clears the organic bar. But rhodiola has a different mechanism (generally activating rather than settling), and because the ashwagandha sits inside a multi-herb proprietary blend with no per-ingredient dose, the dose and whole-root bars can’t be evaluated for ashwagandha specifically.

Against the four criteria (treating this as an ashwagandha product, which it is only partially): dose — (undisclosed inside blend), form ✗ (multi-herb), absorption ✗, organic ✓ (organic herbs). 1 of 4.

The cheapest single-ingredient ashwagandha on the list. Per Nutricost’s own product page as of May 25, 2026, the label lists 600 mg of ashwagandha root extract per capsule — clearing the dose and form bars. The page describes a GMP-compliant manufacturing facility, but the ashwagandha root extract listed is the standard (non-organic) grade — the product page doesn’t state a organic root. No piperine pairing on the label.

Against the four criteria: dose ✓, form ✓, absorption ✗, organic ✗ (standard non-organic extract). 2 of 4 — the best-value dose-and-form pick at this price point.

We included this as a non-ashwagandha control because so many of the people searching “3am wake-up” on Google end up on it. Chamomile and valerian tea at 9pm with 400 mg of magnesium glycinate is a calming evening ritual with real evidence behind both ingredients — but it’s aimed at sleep onset and relaxation, not at the HPA-axis feedback loop the cortisol-supplement category is trying to address.

N/A across the four ashwagandha-specific criteria — included for context, not scored as a cortisol supplement. 0 of 4.

A clinical-line product sold mainly through naturopathic practitioners. Per the Integrative Therapeutics product page as of May 25, 2026, the formulation is two proprietary blends— a 500 mg “Stress-Reducing” blend containing “Ashwagandha (Withania somnifera) (SENSORIL®) (root, leaf) Extract” and L-theanine, plus a 450 mg “Cortisol-Reducing” blend of magnolia and phellodendron — with per-ingredient ashwagandha dose not disclosed. Two material points: the ashwagandha source is SENSORIL® (root and leaf), not whole-root; and the SENSORIL® extract used here is a standard (non-organic) grade — the product page doesn’t state a organic root.

Against the four criteria: dose ✗ (proprietary blend, ashwa dose undisclosed), form ✗ (root + leaf, not whole-root), absorption ✗, organic ✗ (standard non-organic extract). 0 of 4. A real product for the actives it does contain — but not evaluable against the trial body.

A mid-market single-ingredient ashwagandha. Per Nature’s Way’s own product page as of May 25, 2026, the label specifies “Ashwagandha (SENSORIL®) (root, leaf) Extract” at 250 mg per capsule, with 1–2 capsules daily recommended — so 250 to 500 mg per day at the manufacturer’s recommended intake. Two issues: the source is SENSORIL® root + leaf, not whole-root; and the daily intake is below the 600 mg trial threshold even at the high end of the recommended dose. The SENSORIL® extract listed is a standard (non-organic) grade — the product page doesn’t state a organic root.

Against the four criteria: dose ✗ (250–500 mg/day, below threshold), form ✗ (SENSORIL root + leaf), absorption ✗, organic ✗. 0 of 4.

KSM-66 is the patented standardised ashwagandha root extract from Ixoreal that’s used in a sizeable share of the published clinical literature. Multiple brands sell encapsulated KSM-66 at 600 mg per cap; the form is genuinely root and the dose meets the threshold. The standard KSM-66 raw material is not organic, though a handful of encapsulating brands source an organic-certified KSM-66 grade — so organic status depends entirely on which generic capsule you actually buy, which is why we marked the column “—” in the table. No piperine.

Against the four criteria: dose ✓, form ✓, absorption ✗, organic — (varies by brand). 2 of 4 conservatively. If your specific KSM-66 capsule brand uses a organic grade, consider it 3 of 4 — a legitimate alternative for the dose-and-form bars, missing only the absorption pairing.

Hims’ flagship sleep product, marketed through their direct-to-consumer telehealth channel. Per Hims’ sleep product line as of May 25, 2026, the Sleep Tight gummy formula contains melatonin + chamomile + L-theanine — and no ashwagandha. Hims’ ashwagandha SKU is a separate product called “Mind Unwind” in their stress line, not part of the Sleep Tight gummy. Sleep Tight is a sleep-onset product (melatonin-led), not a cortisol-baseline product.

Against the four criteria (evaluating as an ashwagandha cortisol product, which it is not): all four bars are not applicable — Sleep Tight is a melatonin product. 0 of 4.

Withanly is the eleventh and final product in the audit, and the reason it earns the full breakdown isn’t that we like the packaging. It’s that on a column-by-column read of the spec sheet, it’s the only one of the eleven where every box is ticked.

The label lists 650 mg of organic ashwagandha rootper capsule — single-origin from one Indian farm, whole-root, no leaf or stem dilution. At the two-capsule daily serving the bottle recommends, that’s 1,300 mg of standardised root extract daily, comfortably above the 600 mg threshold the trials used. 5 mg of organic black pepper (the source of piperine, the bioavailability enhancer studied in the absorption literature) is in every capsule. The root is a organic extract — grown without synthetic pesticides or irradiation — and the bottles are GMP-bottled in the USA. No fillers, no flow agents, no proprietary-blend obscuring.

That stack — dose ✓, form ✓, absorption ✓, organic ✓ — is the four-of-four row in the table above. None of the other ten products in the audit cleared more than two.

For full transparency: Withanly is the publisher of this Journal and the seller of the product reviewed here. We disclose that in the SponsoredChip at the top of every article, in the methodology section below, and in the editor’s note at the bottom. The criteria framework above was set first; the products were scored against the framework; Withanly hits 4 of 4 because the spec sheet was built to the trial standards from the start.