Half of supplements fail their own label claims, and a new certification is making that public

SuppCo’s earlier testing of popular supplements found that roughly half didn’t meet basic label accuracy standards. Now the health tech company is formalizing that work with TESTED, an independent certification that acts as a secret shopper for supplements—buying products anonymously at retail, sending them to an ISO 17025–accredited lab, testing active ingredient claims, and publishing every result.

What this means for consumers

Most existing certifications test manufacturer-provided samples, meaning brands control what gets evaluated. SuppCo removes that variable entirely.

Products that meet or exceed 95% of their labeled active ingredient claims earn the certification. Brands that fall short go through remediation and get retested. Everything repeats annually.

Plus, every result—pass or fail—is published on SuppCo’s product pages at supp.co/tested, so you can look up a supplement before you buy it. Consumers will also be able to access the data on the app, available on the App Store and Google Play.

SuppCo debuted Tested.

If this sounds familiar, it’s the same trust gap that surfaced during last year’s Consumer Reports protein powder controversy, a known industry that uses the word “quality” more as a marketing claim than a verifiable fact. Now, that’s changing.

The first brands to opt into testing tell part of the story: Momentous, Thorne, Metagenics, Gaia Herbs, Designs for Health, Fatty15, Solaray, Niagen, Integrative Therapeutics, and Pendulum.

These are brands that already invest in testing and transparency—which is exactly the point. If credible brands opt into public accountability, it raises the bar for everyone else.