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The 8.8/10 score on our homepage isn't a marketing number — it's calculated from five weighted criteria we apply consistently across every product we review. Publishing the methodology here is meant to make that score checkable, not just trustable on faith.
Full marks require every ingredient and dose individually disclosed on the label — no proprietary blends. Partial credit for partial disclosure. Zero credit for a fully hidden formula. This is weighted highest because it's a precondition for evaluating everything else.
For each disclosed ingredient, we compare the label dose against the amount used in the clinical research behind it. Full marks for doses at or near the studied range; deductions scale with how far below that range a dose falls.
We check for GMP certification and FDA-registered facility status, both specific and verifiable claims. Vague claims like "lab tested" with no named certifying body receive minimal credit, since they're unverifiable.
We look at the pattern across verified-purchase reviews — not the star rating alone, but whether reported experiences are consistent, plausible given the ingredients, and free of obvious astroturfing patterns (identical phrasing, suspiciously uniform 5-star clustering).
Calculated as cost per effective dose (accounting for whether ingredients are dosed high enough to matter), not simple price-per-bottle. A cheaper product with underdosed ingredients scores lower here than a pricier, correctly-dosed one.
It doesn't independently lab-test products for label accuracy — that requires equipment and testing we don't have access to. It doesn't run controlled trials. It's an assessment of publicly available information (label, certifications, published research, aggregated customer feedback), and we think that distinction matters enough to state plainly rather than imply something more rigorous than what we actually did.
A review score means little if you can't see how it was calculated. Applying the same five criteria consistently — and being upfront about the limitations — is how we'd want a reviewer to treat a product we were considering buying ourselves.
The complete 8.8/10 breakdown across all five criteria.
See the Scorecard →Disclaimer: This article is for informational purposes only and does not constitute medical advice. Consult a healthcare provider before starting any supplement. This page contains affiliate links.