Source Naturals L-Phenylalanine Free Form Essential Amino Acid - 50 Tablets Acidophilus Quality You Can Rely on:

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Source Naturals L-Phenylalanine Free Form Essential Amino Acid - 50 Tablets Acidophilus Quality You Can Rely on:Source Naturals L Phenylalanine Free Form Essential Amino Acid. L Phenylalanine is an essential amino acid that serves as a precursor to tyrosine and a broad range of neurotransmitters and hormones. It is first converted to tyrosine, which becomes L dopa, then norepinephrine, a key neurotransmitter and adrenal hormone. L Phenylalanine is also a direct precursor of PEA (phenylethylamine), another important neurotransmitter. The suggested use is to take