Jarrow Formulas Resveratrol Synergy, 200 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 famous red-wine molecule; longevity claims have outrun the human evidence.
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 1 platform.
Medium confidence4 reviews · positive sentiment
Compiled from a iHerb 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
A resveratrol-plus-cofactor blend (green tea, quercetin, vitamin C) rather than an isolated high-dose resveratrol, good synergy story, but the 200mg headline dose is diluted across several actives, so it's not comparable dose-for-dose to single-ingredient resveratrol produkter.
Why this scored this way
This Jarrow Formulas Jarrow Formulas Resveratrol Synergy, 200 mg scores 5.2, making it among the lowest-scoring produkter we track. It contains 100.0mg of Vitamin C, which is only 20% of the 500mg trial dose with grade A evidence (strong human trial data). The quality transparency (5.0) is limited by the lack of third-party testing.
What drives the score up
- Overall score of 5.2 with no single dominant strength.
What drags it down
- Dose-evidence score of 4.5 is below average for the site.
- Overall dose is only 40% of the trial dose across ingredients.
- Resveratrol (200.0mg is 40% of the 500mg trial dose) is significantly under-dosed.
- Vitamin C (100.0mg is 20% of the 500mg trial dose) is significantly under-dosed.
- Quercetin (100.0mg is 20% of the 500mg trial dose) is significantly under-dosed.
Why you'd choose it
- You want a reasonably priced sirtuin activator product.
- You want Vitamin C 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 need a full trial dose of resveratrol (this product under-doses it).
Where this sits
Spot an error?
If you are the manufacturer or brand owner of Jarrow Formulas Resveratrol Synergy, 200 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.
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