Jarrow Formulas Ashwagandha (KSM-66), 300 mg
How we scored this product Show the full breakdown
Bevisning gates dose: the evidence grade sets the ceiling, and the dose decides how much of that ceiling the product reaches. Value = inverse of price-per-trial-dose-day. Community = mean sentiment of external reviews. Säkerhet caps applied after weighting.
This score is our editorial judgment, not a scientific standard. We combine published evidence, dose, price, transparency, and consumer signals into one composite: this is our method, not a peer-reviewed clinical rating. A higher score means a product does better on the factors we weight, not that it is medically proven to work.
Question 1
Does the molecule work?
Does the molecule work?
The science behind each active ingredient, independent of which brand sells it.
The best-studied adaptogen for stress and sleep.
Question 2
Is this bottle good?
Is this bottle good?
The specific product: dose, price, transparency, and what buyers report.
Question 3
What's the catch?
What's the catch?
Säkerhet flags, transparency gaps, dosing concerns, and recurring buyer complaints.
Quick verdict
The numbers
Data verification
Per-ingredient breakdown
All product data is checked against original sources. Prices, doses, and testing status are updated when product pages change. Bevisning grades are reviewed when new human RCTs are published. Read how we verify.
What's inside
Consumer signals
Consumer signals gathered from 3 platforms.
High confidenceConsumer sentiment compiled from 3 public sources.
4,266 reviews · positive sentiment
Compiled from Amazon listing located during research; verified at build time.
positive sentiment
Compiled from iHerb listing located during research; verified at build time.
positive sentiment
Compiled from YouTube listing located during research; verified at build time.
These are consumer sentiment signals. They do not measure whether the product actually works. See our evidence section for that.
What others say (unverified)
No external reviews aggregated yet for this product.
Research behind this product
The studies that established the trial dose and evidence grade for each active ingredient in this product. Click through to read the original paper.
Redaktionellt notes
Standard-dose (300mg) KSM-66 ashwagandha in a 120-capsule bottle, a 4-month supply at 1 cap/day, competitively priced versus other KSM-66-branded single-ingredient produkter on the market.
Why this scored this way
This Jarrow Formulas Jarrow Formulas Ashwagandha (KSM-66), 300 mg scores 6.5, making it a mid-tier product with both strengths and weaknesses. It delivers 300.0mg of Ashwagandha (50% of the 600mg trial dose) with grade B evidence (promising human data, not yet comprehensive). The quality transparency (6.0) is limited by the lack of third-party testing.
What drives the score up
- Dose-evidence score of 6.3 shows decent alignment with trial doses.
What drags it down
- No third-party testing, which caps the quality transparency.
- Quality transparency of 6.0 is below the site average.
- Limited consumer feedback (community score: 6.0).
Why you'd choose it
- You want good value at $0.48/day.
- You want Ashwagandha from a Jarrow Formulas product.
Why you might skip it
- You want third-party verified purity.
- You want a product with a publicly available CoA.
- You want stronger transparency (this scores 6.0).
Where this sits
Spot an error?
If you are the manufacturer or brand owner of Jarrow Formulas Ashwagandha (KSM-66), 300 mg and believe any data on this page is incorrect (wrong dose, wrong ingredient, wrong price, missing certification, outdated status), you can request a correction.
We review every request, verify it against primär sources, and publish any change with a dated note in the version history above. Corrections from brand owners are treated the same as corrections from anyone else: verified before they move.
Request a correction →Similar produkter
All Adaptogen →The next highest-scoring produkter in Adaptogen, same scoring method, same rules.