L-Phenylalanine is an essential, nine-carbon amino acid and is a precursor to the amino acid tyrosine. Because tyrosine is necessary for the synthesis of proteins and the production of the neurotransmitters dopamine and norepinephrine, phenylalanine is an extremely important nutrient that must be obtained through the diet or supplementation.
L-Phenylalanine Suggested Use
As a dietary supplement, take 1 capsule, 1 to 3 times a day as needed, preferably between meals.
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