USP Verified
Label accuracy, contaminants, dissolution, GMP for everyday supplements
Summary
USP says a USP Verified product contains the listed ingredients in the declared amounts, lacks harmful levels of specified contaminants, was made under FDA GMPs, and dissolves within a specified time. [1]
What it tests
Manufacturing site audits for compliance with GMPs (21 CFR Part 111 and USP chapter <2750>), repeated annually. [2]
Review of quality-control and manufacturing documents, and lab testing of samples from selected lots against label and certificate-of-analysis claims. [2]
Annual post-verification surveillance testing of targeted products bearing the mark. [2]
What it doesn't cover
USP's consumer list of what the mark means doesn't include banned-in-sport screening; for athletes, USADA points to NSF Certified for Sport. [1] [3]
Seals don't guarantee safety or effectiveness. [4]
How to verify a product
Look up on their siteUse USP's Verified Product Finder to search all USP Verified products. [1]
Notes
The program is voluntary and complements FDA regulation under DSHEA. [2]
Sources
- USP — USP Verified Mark retrieved 2026-10-27
- USP — Dietary Supplement Verification Program manual for participants retrieved 2026-10-27
- U.S. Anti-Doping Agency (USADA) — Supplement Connect retrieved 2026-10-27
- NIH Office of Dietary Supplements — Dietary Supplements: What You Need to Know retrieved 2026-10-27