NSF International is a global independent public health and environmental organization that provides standards for development, product certification, testing, auditing, education and risk management services for public health and the environment. NSF International tests and certifies products to verify they meet these public health and safety standards. Products that meet these standards bear the NSF mark. The NSF Certified for Sport program is designed to minimize the risk that a dietary supplement or sports nutrition product contains banned substances.
Klean Athlete is a professional line of supplements designed specifically for athletic use and is NSF Certified for Sport. Klean Athlete is manufactured by Douglas Laboratories, a leading manufacturer of science based dietary supplements for more than 50 years.




Every product undergoes meticulous verification that compares the label and ingredient composition before being given the esteemed NSF Certified for Sport stamp of approval. You can feel confident that these nutritional supplements support a healthy lifestyle and peak performance. All Klean Athlete products are free of yeast, wheat, gluten, soy, corn, sugar, starch, artificial coloring, flavoring and preservatives.