Nootropics Depot vs Jarrow KSM-66 Ashwagandha (2026)
Nootropics Depot KSM-66 Ashwagandha (300mg, 90ct) and Jarrow Formulas Ashwagandha KSM-66 (300mg, 120ct) use the identical licensed KSM-66 extract at 300 mg — the same branded root extract used in much of the published ashwagandha research. The differences are price and how the serving is packaged; see the table below.
Informational comparison of label data and cost — not medical advice. Prices are per-serving figures last reviewed October 5, 2026; formulas are each brand’s published Supplement Facts.
The numbers, side by side
| Nootropics Depot KSM-66 Ashwagandha (300mg, 90ct) | Jarrow Formulas Ashwagandha KSM-66 (300mg, 120ct) | |
|---|---|---|
| Form | KSM-66 root extract | KSM-66 root extract |
| Dose / serving | 300 mg | 300 mg |
| Serving size | 1 capsule | 1 capsule |
| Servings / container | 90 | 120 |
| Certification (as listed) | Third-Party Tested | None |
| Price | $22.99 | $22.93 |
| Cost / day | $0.25 | $0.19 |
| Buy | Check price → | Check price → |
Prices are Amazon buy-box figures ÷ pack serving count, last reviewed October 5, 2026. Formula details are each brand’s published Supplement Facts panel.
The real difference
KSM-66 is a branded, standardised ashwagandha root extract, licensed by its manufacturer to supplement brands. When two products both say KSM-66 at 300 mg, they contain the same extract at the same dose. That is unusually clean — most herbal comparisons founder on unknown standardisation, and this one does not.
So the decision comes down to price and format. Compare the serving size and cost per day rows in the table above. We did not find either product in a public certification registry. Neither is a different herb.
Who each one is for
Choose Nootropics Depot if you would rather buy the 90-count bottle.
Choose Jarrow if cost per day decides it: $0.19 for Jarrow against $0.25 for Nootropics Depot, from the catalog prices in the table above.
Worth knowing ashwagandha is not for everyone. It is generally avoided in pregnancy, it may interact with thyroid medication, and there are case reports of liver injury. Talk to a clinician if you have questions.
Our picks
300 mg KSM-66 per serving. $0.25/day.
The same 300 mg of KSM-66 per serving. $0.19/day.
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Frequently asked questions
Is Nootropics Depot or Jarrow KSM-66 better?
They use the identical licensed KSM-66 root extract at the same 300 mg dose, so the active ingredient matches exactly. The two differ in price and packaging. We did not find either product in a public certification registry.
What does KSM-66 actually mean?
KSM-66 is a branded, standardised ashwagandha root extract produced under licence and used in much of the published clinical work. When two products both state KSM-66 at the same milligram dose, the extract inside is the same, which is rarely true of unbranded herbal extracts.
Who should not take ashwagandha?
It is generally avoided in pregnancy, and it can interact with thyroid medication because it may raise thyroid hormone levels. There are also published case reports of liver injury. Anyone pregnant, on thyroid treatment, or with liver disease should check with a clinician first.
Related
- KSM-66 vs Sensoril — root vs leaf-and-root, and why the dose differs
- Ashwagandha guide — evidence, dose and cautions
- All ashwagandha products — ranked by cost per dose
Sources
- Product labels: manufacturer Supplement Facts panels for both products, plus live Amazon pricing.
- NIH National Center for Complementary and Integrative Health. “Ashwagandha.” nccih.nih.gov
- Product labels and Amazon pricing for both products, reviewed October 5, 2026.