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U.S. Anti-Doping Agency (USADA)

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Reduce Your Risk

Supplement 411

If athletes choose to use supplements despite the known risks, USADA has always recommended that athletes use only dietary supplements that have been certified by a third-party program that tests for substances prohibited in sport.

USADA currently recognizes NSF Certified for Sport® as the program best suited for athletes to reduce the risk from supplements.

Using an NSF Certified for Sport® product significantly reduces, but does not necessarily eliminate, the chance of testing positive and being sanctioned. Under the rules, if an athlete tests positive and establishes the source as a contaminated NSF Certified for Sport® product, the athlete could get a much-reduced sanction, but there likely would still be a consequence.

NSF Certified for Sport®: Before you Buy

In Store:
  1. Confirm that the product is labeled with one of these two logos only.

    old NSF Certified for Sport logo  vertical NSF Certified for Sport logo

  2. Scan the supplement label using the NSF Certified for Sport®  app to make sure it’s a certified product and lot number.

    NSF certified for sport app image on phone

Online:
  1. Confirm that the product is labeled with one of these two logos only.

    old NSF Certified for Sport logo  vertical NSF Certified for Sport logo

  2. Search the NSF Certified for Sport® App or the database at NSFSport.com for products you are interested in taking.
    screenshot of the NSF Certified for Sport website database

  3. Once you’ve identified a supplement, use the contact information provided for the product to contact the supplement company.
    phone icon

  4. Inform the supplement company that you want to order an NSF Certified for Sport®  product with the certified lot numbers.
    screenshot of product details from NSF Certified for Sport website

  5. Once you have the product, confirm that the lot number on the product matches the lot number listed in the NSF Certified for Sport® database.
    image of supplement bottle with pop-out close up of the lot number
NSF Certified for Sport: Before You Buy graphic
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