NSF International Dietary Supplement Services

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What Our Mark Means

Runners at starting line ready to start a race

Given the fast pace at which many dietary supplements enter the marketplace and reports that suggest that some of these products do not actually contain the ingredients or quantities shown on the label, consumers have cause to be concerned. With such a confusing array of information out there, it can be difficult to determine which manufacturers’ products are credible.

That’s why NSF International led the development of the nation’s first truly independent testing standard and product certification program strictly for dietary supplements, NSF/ANSI 173.

NSF International’s Certified for Sport® program builds on that dietary supplements standard and helps athletes make safer decisions when choosing sports supplements. MLB, NHL and CFL clubs are permitted to provide and recommend only products that are Certified for Sport®. Certified for Sport® is also recommended by the NFL, PGA, LPGA, CCES, CPSDA and many other sports organizations.

chocolate and vanilla protein powder

There are numerous quality components of the Certified for Sport® certification program, which verifies that:

  • Products do not contain any of approximately 270+ substances banned by major athletic organizations.
  • The contents of the supplement actually match what is printed on the label.
  • There are no unsafe levels of contaminants in the tested products.
  • The product is manufactured at a facility that is GMP registered and audited twice annually for quality and safety by NSF International.
NSF Certified for Sport

Just Look for the NSF Certified for Sport® Mark

If you use a dietary supplement that bears the NSF Certified for Sport® mark, you can be confident that its contents were thoroughly tested by one of the most respected certifiers in the world.

With so many choices on the market, it pays to be cautious. Do your research and look for the Certified for Sport® mark on products.