a form of the essential amino acid phenylalanine

henyl linine - Contains 50-50 blend of the D & L forms of phenylalanine, an essential amino acid.

D.L-Phenylalanine: A 50-50 mixture of d-phenylalanine and l-phenylalanine. May help alleviate chronic pain by increasing endorphin activity (the body s natural painkillers).