Not medical advice · Not affiliated with any certification program
Supplement Seal Check

Supplements and drug-tested athletes

USADA warns supplements can carry serious risks even from trusted stores, and recommends using only third-party certified products if you use them at all. [1]

Which program

USADA currently recognizes NSF Certified for Sport as best suited for athletes. [1]

Informed Sport says research shows some supplements may be contaminated with low levels of steroids, stimulants or other banned substances. [2]

BSCG notes anti-doping authorities don't formally approve any supplements. [3]

Sources

  1. U.S. Anti-Doping Agency (USADA) — Supplement Connect retrieved 2026-10-27
  2. Informed Sport (LGC) — Frequently Asked Questions retrieved 2026-10-27
  3. BSCG — Marketing & Seal Guidelines retrieved 2026-10-27