We invest in the certification you must earn - NSF Certified for Sport®. Thorne has an NSF Certified facility and manufactures 30+ NSF Certified for Sport® products which gives athletes complete confidence in Thorne products.

Why pros care

Pros love our NSF Certified for Sport® product line for its testing of more than 200 banned substances. The Certification offers Professional Athletes piece of mind knowing that nothing on the extensive banned substance list will show up on a drug test.

Why you will too

While you may not be getting tested for more than 200 banned substances, knowing what you're putting into your body is essential. In addition to NSF, we conduct 4 rounds of testing for 760 contaminants, ensuring that the final product contains only what you need for optimal body function.