Arginine ethyl ester is formed by subjecting the esterified arginine in order to increase the bioavailability of the amino acid. As used in lower doses than arginine itself has a much higher activity. Recommended due to the supporting of exercise capacity as a result of the intensification of the synthesis of nitric oxide (neurotransmitter). Affects the secretion of the hormone, insulin, growth hormone (somatotropin) and insulin-like growth factor (IGF-1), causing the intesification of anabolic and catabolic processes. Used in the form of mono-preparation supplement or multicomponent supplements, is the most advanced form of the amino acid arginine used in supplementation, despite high prices, very popular among athletes.