L-Phenylalanine is a simple, yet essential, amino acid that we require for nerve and brain function. Being an essential amino acid we have to get our supply from the foods we eat. Foods rich in L-Phenylalanine include wheatgerm, beans, meat and cheese. L-Phenylalanine is the precursor for the production of L-Tyrosine, another amino acid that deals with nerve and brain function.
