NOW Supplements, L-Phenylalanine 500 mg, Amino Acid, 120 Veg Capsules

L-Phenylalanine is an essential amino acid that is necessary for the synthesis of proteins.* Because L-Phenylalanine can be readily converted into the amino acid tyrosine, which forms part of the structure of the neurotransmittters dopamine and norepinephrine, it is important for the maintenance of a healthy nervous system.*