Verified Supplement Data Primary-sourced

Supplement Brand Report Cards

By Erin Rose · Updated · Methodology · About Us

Most brand reviews are opinion. We grade supplement brands on data instead. Three things nobody else combines: certification, cost per dose, and FDA reports in honest context. Each report card is computed live from our own catalog, not hand-written claims.

  • Thorne

    31 products tracked. Certification rate, price vs category median, and FDA adverse-event reports, all computed live.

  • Nature Made

    15 products tracked. The certification standout: a high USP Verified rate at mass-market prices, with the highest FDA report count on this site, a volume-bias case study.

  • NOW Foods

    103 products tracked, the widest catalog we cover. Enormous selection, a very low third-party certification rate.

  • Sports Research

    15 products tracked. A smaller catalog with some genuine third-party certification, and the fewest FDA reports on this site.

  • Doctor's Best

    22 products tracked, zero third-party certified. Frequently our best-value pick: you trade verification for price.

  • Coming soon

    More brands

    We are building out report cards for the other brands in our catalog next. Check back, or see our full supplement comparisons in the meantime.

About our data

Every report card uses the same catalog and cost-per-dose method as the site. We add FDA CAERS and FAERS adverse-event data for safety context. See our methodology and safety-scoring approach for the full detail.