L-PHENYLALANINE, an essential amino acid, is a precursor for the amino acid tyrosine, as well as for a whole series of neurotransmitters and hormones. Phenylalanine is first converted to tyrosine, whice becomes L-dopa, which then converts to norepinephrine, a key neurotransmitter and adrenal hormone. L-PHENYLALANINE is also a direct precursor to PEA (Phenylethylamine), another important neurotransmitter. |
