Amino acids are broken down into "essentials" and "non-essentials." "Essentials" are those that the body is incapable of synthesizing, "non-essentials" are those that your body can produce. The "essential amino acids" are: Isoleucine, Leucine, Lysine, Methionine, Phenylalanine, Threonine, Tryptophan and Valine along with Histidine. Arginine is considered "semi-essential." All twenty-two amino acids are required by the body for the synthesis of protein. Country Life® offers a full line of individual amino acids with many combinations for specific applications.**
