Supplier: Amino acids, L-arginine, L-tryptophan, L-serine, L-threonine, L-methionine, L-proline, L-glutamine, L-lysine, L-cystine, L-cysteine, L-leucine, L-isoleucine, L-valine, S-tyrosine, D-aspartic acid, D-proline, D-malic acid, D-valine, D-threonine, D-tryptophan