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L-PHENYLALANINE FREE-FORM AMINO ACID FROM NOW FOODS. This essential amino acid is vital to overall brain and nervous system function. In the body phenylalanine can be converted to the amino acid tyrosine, which is used in the production of neurotransmitters: dopamine and norepinephrine (important for promoting alertness). Now offers a 500mg potency per capsule and is often recommended for prom...
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Reg.: $39.98 (Save $9.99)
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