Best Ashwagandha Supplements (2026) — Ranked by Cost per Effective Dose
Top pick for Ashwagandha: Nootropics Depot KSM-66 Ashwagandha (300mg, 90ct) — 300mg per 1 capsule, Third-Party Tested, $0.22/day. Our best-value pick.
All Ashwagandha Supplements Compared
All 4 products sorted by cost per clinically-effective daily dose (lowest first). Dose, certification, and pricing verified against NIH DSLD and manufacturer data.
| Product | Brand | Dose / Serving | Cost / Day | Certification | Pick | Buy |
|---|---|---|---|---|---|---|
| NOW Foods Ashwagandha Extract (450mg, 90ct) | NOW Foods | 450mg / 1 capsule | $0.19 | None | Buy | |
| Nootropics Depot KSM-66 Ashwagandha (300mg, 90ct) | Nootropics Depot | 300mg / 1 capsule | $0.22 | Third-Party Tested | Best Value | Buy |
| Jarrow Formulas Ashwagandha KSM-66 (300mg, 120ct) | Jarrow Formulas | 300mg / 2 capsules | $0.33 | None | Budget Pick | Buy |
| Thorne Ashwagandha (Shoden, 120mg, 30ct) | Thorne | 120mg / 1 capsule | $0.93 | NSF Certified for Sport | Quality Pick | Buy |
Our Picks
Best Value: Nootropics Depot KSM-66 Ashwagandha (300mg, 90ct)
300mg per 1 capsule. Third-Party Tested. $0.22/day. 90 servings per container at $19.99.
Quality Pick: Thorne Ashwagandha (Shoden, 120mg, 30ct)
120mg per 1 capsule. NSF Certified for Sport. $0.93/day. 30 servings per container at $28.00.
Budget Pick: Jarrow Formulas Ashwagandha KSM-66 (300mg, 120ct)
300mg per 2 capsules. $0.33/day. 60 servings per container at $19.99.
How We Rank Ashwagandha Supplements
Every product is evaluated on three criteria:
- Cost per clinically-effective daily dose. Not cost per pill or cost per bottle. We calculate what it actually costs per day to take the dose used in clinical trials.
- Third-party certification. USP Verified, NSF Certified for Sport, and ConsumerLab Approved indicate independent testing for purity, potency, and contaminants.
- Bioavailable form. We prioritize products using the specific chemical form shown to be most effective in published research.
Rankings are not influenced by affiliate commissions. We earn the same commission regardless of which product you choose. Read our full methodology.
Personalize Your Ashwagandha Choice
Not sure which ashwagandha supplement is right for you? Use our free tools:
- DNA Supplement Analyzer — upload 23andMe or AncestryDNA data to check for genetic variants affecting ashwagandha metabolism. Runs entirely in your browser.
- Lab Results Interpreter — enter your blood test values to get personalized dosing recommendations.
- Supplement Stack Builder — build a complete protocol based on your age, sex, medications, and goals.
- Supplement Audit — already taking ashwagandha? Check if you have the right form and dose.