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Quality

Verified supplement brands

This directory lists brands that have at least one product on a public certification or licence list. Each brand page names the products, the program, and the page where you can recheck the listing. SupplementScore is not paid by any brand here.

45 brands and 760 products, checked 15 October 2026.

What counts

• USP Verified is the yellow USP mark for a specific formula. "USP grade" on a label is not the same thing.
• NSF Certified for Sport tests identity, dose, contaminants, and substances banned in sport. An NSF gluten-free mark is a different program and is not listed here.
• Informed-Sport and Informed-Choice are LGC batch-testing programs. Sport is aimed at drug-tested athletes. Choice is the consumer program. A product on one list is not automatically on the other.
• Health Canada NPN means that product is licensed for sale in Canada. It is not a purity seal like USP or NSF.

What was left off

• ConsumerLab pass or fail results sit behind a subscription. No product is marked ConsumerLab-approved here, because that result was not on a public page we could recheck.
• Labdoor rankings, "third-party tested" with no named program, patented-ingredient logos, and USDA Organic are not treated as these certifications.
• Older pages on this site named NOW Foods vitamins as USP Verified. NOW was not on the USP Verified directory when we checked. NOW Sports products that are on the Informed-Sport list are on the NOW page.

USP Verified

Informed Choice

Health Canada NPN

NSF Certified for Sport

Informed Sport

Read what USP, NSF, Informed-Sport, and ConsumerLab actually test. Seals do not show that a supplement works.