Hi-Tech's KRANK3D® utilizes a Hi-Tech proprietary compound –– Citrulline Silicate (Nitro Rx®) –– which is the strongest Nitric Oxide compound ever developed! KRANK3D® Utilizes the Novel Approach called Arginase Inhibition! This Hi-Tech exclusive technology leaves an abundance of L-arginine uncompromised in the muscle pool to create a wealth of NO, leading to maximum muscular vasodilation. KRANK3D® Pushes the Boundaries of Nitric Oxide Production! KRANK3D® is designed to take advantage of the pre-workout window of opportunity to accelerate muscle growth by creating a feeding pool flourishing with compounds that improve training intensity, work performance, and set your muscles up for more rapid recovery and enhanced muscular growth.