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L-Phenylalanine (500 mg-50 tabs)*
Source Naturals
L-Phenylalanine (500 mg-50 tabs)* Source Naturals

L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine, and to 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.
L-Phenylalanine (500 mg-100 tabs)*
Source Naturals
L-Phenylalanine (500 mg-100 tabs)* Source Naturals

L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine, and to 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.
True Focus (90 V-caps)
NOW Foods
True Focus (90 V-caps) NOW Foods

NOW
DLPA (375 mg 60 tabs)*
Source Naturals
DLPA (375 mg 60 tabs)* Source Naturals

DL- Phenylalanine or DLPA is a 50/50 blend of the D- and L- forms of the amino acid phenylalanine (phenylalanine is one of the few amino acids that can be utilized in its D- form). . L-Phenylalanine is the precursor to two neurotransmitters that help support an alert state.
DLPA (375 mg 120 tabs)*
Source Naturals
DLPA (375 mg 120 tabs)* Source Naturals

DL- Phenylalanine or DLPA is a 50/50 blend of the D- and L- forms of the amino acid phenylalanine (phenylalanine is one of the few amino acids that can be utilized in its D- form). . L-Phenylalanine is the precursor to two neurotransmitters that help support an alert state and positive mood.
DLPA (750 mg 60 tabs)*
Source Naturals
DLPA (750 mg 60 tabs)* Source Naturals

DL- Phenylalanine or DLPA is a 50/50 blend of the D- and L- forms of the amino acid phenylalanine (phenylalanine is one of the few amino acids that can be utilized in its D- form). . L-Phenylalanine is the precursor to two neurotransmitters that help support an alert state.
DLPA (750 mg-30 tabs)*
Source Naturals
DLPA (750 mg-30 tabs)* Source Naturals

DL- Phenylalanine, or DLPA, is a 50/50 blend of the D- and L- forms of the amino acid phenylalanine (phenylalanine is one of the few amino acids that can be utilized in its D- form). Researchers believe D-phenylalanine (DPA) inhibits the action of an enzyme that breaks down endorphins and enkephalins. These are proteins which bind to opiate receptor sites in the brain, thereby influencing the perception of discomfort. By obstructing the action of this enzyme, DPA may extend the life of endorphins and enkephalins, and their positive influence on comfort levels. L-Phenylalanine is the precursor to two neurotransmitters that help support an alert state.
DL-Phenylalanine (500 mg 60 capsules)
Solaray Vitamins
DL-Phenylalanine (500 mg 60 capsules) Solaray Vitamins

DL-Phenylalanine 500 mg is the 50/50 Blend of D-Phenylalanine & L-Phenylalanine, a dietary supplement.
Diet CitriMax Complex (655 mg 240 tabs)*
Source Naturals
Diet CitriMax Complex (655 mg 240 tabs)* Source Naturals

CitriMax combines a concentrated extract of the fruit of the Garcinia cambogia tree with the trace mineral chromium and the amino acid L-phenylalanine. When taken in conjunction with the Maximum Metabolism Weight Loss Plan body fat may be reduced.
Lecithin Concentrate ( 100 softgel )
Nature's Way
Lecithin Concentrate   ( 100 softgel ) Nature's Way

Maintain proper electrical energy and nutrient transfer across the cell membrane.
L-Phenylalanine 500 mg (60 Caps)
NOW Foods
L-Phenylalanine 500 mg (60 Caps) NOW Foods

Nervous System Support Supports Positive Mood* Free-Form L-Phenylalanine is an essential amino acid that can be readily converted into 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.* ; Related Products
Diet-Phen (814 mg 45 tabs)*
Source Naturals
Diet-Phen (814 mg 45 tabs)* Source Naturals

The Diet-Phen Weight Loss Plan can boost metabolism and energy levels to help you lose weight. St. John's wort, standardized to 0.3% hypericin, can help support a positive mood. L-phenylalanine is the precursor to a neurotransmitter that helps support an alert state.

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