DL-Phenylalanine 500 mg
DL-Phenylalanine 500 mg
DL-Phenylalanine 500 mg
DL-Phenylalanine 500 mg

DL-Phenylalanine 500 mg

Regular price $27.70 Sale

DL-Phenylalanine is a dietary supplement formulated to support mental functioning and emotional well-being.*

DL-Phenylalanine is a combination of the well-tolerated essential amino acids, d-phenylalanine and l-phenylalanine. Together, these compounds promote mental functioning and support a positive outlook. l-Phenylalanine is a precursor to tyrosine, which converts to the neurotransmitters norepinephrine, epinephrine, dopamine and tyramine. Tyrosine and its metabolites may support emotional well-being, memory and learning. d-Phenylalanine may promote the levels of certain endorphins, thereby calming stressed muscles and joints.


Take 4–6 capsules per day, in divided doses, between meals.


Serving Size: One Vegetarian Capsule

Amount Per Serving
DL-phenylalanine ... 500mg
(free-form)

Other Ingredients: ascorbyl palmitate, vegetarian capsule (cellulose, water)


Individuals with phenylketonuria or tardive dyskinesia should avoid this product. Occasional nausea, heartburn, or headaches have been associated with dl-phenylalanine. If pregnant or lactating, consult your physician before taking this product.