Independent supplement ratingsUS and Canada · Updated weekly
A ratings desk for a category that has spent thirty years grading its own homework.
A ratings desk for a category that has spent thirty years grading its own homework.
Veg capsules · 90 servings
450mg standardized extract / 300–600mg studied
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The value workhorse. NOW's ashwagandha is a standardized extract at 450 mg — squarely in the studied range — for about $0.16 a serving, which is roughly as cheap as a real dose gets. The one caveat is that it's a generic standardized extract rather than a named, separately-trialled one like KSM-66, so the specific clinical data is one step removed. On dose and price, though, it's hard to argue with.
450 mg of standardized extract with the dose printed and no blend — a genuine, studied-range amount. It simply isn't one of the branded extracts the headline trials used, so we place it a notch below the named-extract products even though the milligram figure is strong.
The pick for anyone who wants a real ashwagandha dose at the lowest price and isn't fussed about a specific branded extract. If you want the exact thing the big trials used, pay a little more for KSM-66.
Reviewed and fact-checked by the NFS editorial team · Last updated 12 Jul 2026