KRANK3D® by Hi-Tech uses a patented Hi-Tech compound – citrulline silicate (Nitro Rx®) – which is the strongest nitric oxide compound ever developed! KRANK3D® uses a new approach called arginase inhibition! This exclusive high-tech technology leaves a large amount of L-arginine intact without compromising the muscle set to create a massive amount of NO, leading to maximum muscle vasodilation. KRANK3D® exceeds the limits of nitric oxide production! KRANK3D® is designed to take advantage of the pre-workout window to accelerate muscle growth by creating a flourishing energy source with compounds that enhance training intensity, improve work performance, and prepare your muscles for faster recovery and greater muscle growth.