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L-Phenylalanine Supplements

Explore L-phenylalanine supplements and compare the amino-acid form, amount per serving, standalone or blended format, other ingredients, and label directions.

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NOW Foods L-Phenylalanine 500 mg, 120 Veg Capsules amino acid supplement for nervous system support Sold out

NOW L-Phenylalanine

NOW Foods
$14.95 - $14.95
$14.95
$14.95 - $14.95
$14.95
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NOW Foods L-Phenylalanine 500 mg Targeted Amino Acid for Neurotransmitter Support Support healthy nervous system function with NOW Foods L-Phenylal...

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$14.95 - $14.95
$14.95
$14.95 - $14.95
$14.95
Sold out

Tiger Fitness buying guide

How to Choose L-Phenylalanine

Understanding L-phenylalanine

L-phenylalanine is an essential amino acid and should be distinguished from D-phenylalanine and DL-phenylalanine. Compare the exact form and amount on the product label.

People with phenylketonuria must avoid phenylalanine, and others should consult a qualified healthcare professional about pregnancy, medication interactions, diagnosed conditions, or use for mood and cognitive symptoms.

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