Product Review
Dietary supplement. Free form. An essential amino acid. L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine, and a whole series of neurotransmitters and hormones.
Dietary supplement. Free form. An essential amino acid. L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine, and a whole series of neurotransmitters and hormones.