NSTANT VOLUMIZATION & UNPARALLELED PUMP Hydration Clean Energy Focus Pump Performance Endurance NOXYGEN® PREWORKOUT BLOODFLOW & 02 AMPLIFIER Along with the NO3-T® Betaine Nitrate and efficaciously-dosed HydroMax® powdered glycerol that are cornerstones of the standard NOXygen® product, we've built upon that foundation with full doses of beta alanine, Vitacholine® natural choline bitartrate, and a unique blend of caffeine anhydrous and ZXR® extended-release caffeine for smooth, sustained energy release. Rounded out by L-tyrosine and Huperzia serrata for focus and Pink Himalayan sea salt for hydration, Purus Labs new NOXygen Pump Pre Workout is the most-advanced and tested formula worthy of its namesake.