Source Naturals, L-Phenylalanine, 500 mg, 100 Tablets

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Supplement Facts
Serving Size: 2 Tablets
Servings Per Container: 50
 Amount Per Serving%DV
Calcium99 mg10%
L-Phenylalanine1 g
Daily Value not established
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  • 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. Phenylalanine is first converted to tyrosine, which becomes L-dopa, which converts to norepinephrine, a key neurotransmitter and an adrenal hormone. L-Phenylalanine is also a direct precursor of PEA (phenylethylamine), another important neurotransmitter.


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