L-Citrulline is an amino acid that once consumed, converts into the amino acid L-Arginine. L-Arginine then converts into a Nitric Oxide molecule. L-Citrulline consumption is also processed and eliminated from the body at a much slower rate than L-Arginine consumption. Glycerol Monostearate plays an important part in PumpMode because its mode of action is very hygroscopic, meaning it attracts water to here it is in high enough concentrations. VASO6 is sourced from, Green Tea, and comprises extracts containing polyphenols that were researched and patented at the University of South Florida. Vitamin C plays several roles in the body, including contributing to normal function of the immune system, contributing to protection of cells from oxidative stress, and contributing to normal energy yielding metabolism. Vitamin D contributes to several functions in the body including contributes to the maintenance of normal muscle function and promotes normal bone health.