Arginine is considered a semi-essential amino acid. The body produces Arginine normally, but sometimes it needs more than what is available. For those looking to enhance athletic performance or increase lean muscle mass, it is difficult to derive the amount required by the body for optimal resuts from natural food sources. Allmax Nutrition's Arginine is an ultra pure form of Arginine - produced in a pharmaceutical grade and government inspected facility. An exclusive 11-stage process derives this powerful amino monopeptide from a pure vegetable base. This means no potential animal contamination and no animal by-product sources can be found in Allmax Nutrition's Arginine.