* Fast Grow Technology * Clinically Researched Potency * Dietary Supplement Discussion: NitroCarn contains the advanced form of carnitine; GPLC (Glycine Propionyl-L-Carnitine). GPLC is a propionyl ester of carnitine that may be helpful in increasing NOx for vasodilation and is essential for mitochondrial fatty acid transport and energy production. GPLC supports cellular energy for muscle strength and endurance.