Mainstream supplement brand
Thorne is a US supplement manufacturer that makes and bottles most of its own products rather than relying entirely on third-party contract manufacturers, and markets heavily on sport and clinician certifications. It sells direct to consumers and also through practitioner channels.
quality claims we could confirm ourselves, rather than repeat from the vendor's marketing.
Vitamins, minerals, multivitamins, protein powders, magnesium and omega-3 products, plus at-home lab testing kits sold under the same brand.
$45
$65
$52
$37
$36
$44
$40
$20This is an informational review of a mainstream, widely available consumer brand, not a research-use-only or prescription product. Nothing here is medical advice, and nothing here should be read as an endorsement to buy. We describe what the brand says about itself and what we could find in the public record, and we separate the two.
Graded by whether we could confirm it ourselves or are only repeating what the vendor states. A vendor's honesty about its own testing is a different question from what a published trial shows, so this is a separate scale from the evidence grades on our guides.
Thorne's own site describes in-house manufacturing as a differentiator from brands that outsource to contract manufacturers. We did not tour a facility or audit this ourselves.
Where the vendor states thisNSF Certified for Sport is a real, named third-party banned-substance screening program, and Thorne is a long-running participant in it, which is more checkable than an unnamed in-house test. We did not verify certification status for every individual SKU.
Where the vendor states thisThorne is generally priced above mass-market multivitamin brands; whether that premium is justified depends on the specific product and your own comparison, not something this page can settle generically.
No. NSF Certified for Sport applies to specific products that carry the mark, not automatically to every SKU Thorne sells. Check the individual product page or the NSF database for a given item.
Every fact above traces to one of these pages, published by the vendor itself and checked on September 25, 2026. Vendor policy pages change without notice, so if something here looks out of date, it probably is.
Compare against
Open pricing, public COAs, strict research-only gate
