NSF® Certified Sport 5 g Per ServingDietary Supplement. We believe in fueling your body with the right ingredients, so you have the power to become the strongest version of you. Replenish For The Strongest Version Of You. A staple in sports nutrition, this NSF Certified for Sport® formula replenishes ATP levels to promote unparalleled strength, cellular energy, athletic performance and muscle building. Its neutral flavor profile and quick-dissolving action makes it an easy addition to any beverage. Simply mix before or after a workout, and experience the strongest version of you.