The Bigger Picture of Amino AcidsAmino Acids are the Building blocks of protein. Our Superior Amino 2222 softgels provide a 2,222 mg full; spectrum array of amino acids including Hydroxyproline and Hydroxylysine.Typical amino acid profile per serving: alanine, 117 mg; arginine, 107 mg; aspartic acid, 143 mg; cystine, 6 mg; glutamic acid, 362 mg; glycine, 187 mg; histidine, 34 mg; isoleucine, 44 mg; leucine, 132 mg; lysine, 117 mg; methionine, 39 mg; phenylalanine, 80 mg; proline, 225 mg; serine,. 95 mg; threonine, 53 mg; tryptophan, 14 mg; tyrosine, 66 mg; valine, 64 mg; hydroxylysine, 7 mg; hydroxyproline, 103 mg. The tryptophan in this product is naturally occurring. Note: by law, protein (amino acids) must be rounded to the nearest gram.