Each tablet typically contains the following amino acids that naturally occur in the following approximate amounts: Lysine (1) 162 mg Cystine 21 mg Arginine (2) 29 mg Methionine (1) 23 mg Tyrosine (2) 38 mg Threonine (1) 77 mg Tryptophan (1) 30 mg Leucine (1) (3) 124 mg Phenylalanine (1) 34 mg Isoleucine (1) (3) 64 mg Valine (1) (3) 62 mg Glutamic Acid 198 mg Histidine (2) 21 mg Glycine 22 mg Alanine 56 mg Proline 64 mg Serine 80 mg Aspartic Acid 122 mg (1) Essential Amino Acid (2) Semi-Essential Amino Acid (3) Branch Chain Amino Acid Source of Protein Pre-Digested Great Fitness Formula.