NOW Supplements, L-Phenylalanine 500 mg, Amino Acid, 120 Veg Capsules

L-Phenylalanine is an essential amino acid that is necessary for the synthesis of proteins.* Because L-Phenylalanine can be readily converted into the amino acid tyrosine, which forms part of the structure of the neurotransmittters dopamine and norepinephrine, it is important for the maintenance of a healthy nervous system.*

• NOW Supplements, L-Tyrosine 500 mg, 120 Capsules
• Now Supplements, L-Tyrosine 750 mg, 90 Veg Capsules
• Now Supplements, L-Tryptophan 500 mg, 120 Veg Capsules
• NOW L-Glutamine 500 mg 120 Capsules
• NOW Supplements, 5-HTP 100 mg, 120 Veg Capsules
• Doctor's Best D-Phenylalanine, Non-GMO, Vegan, Gluten Free, 500 mg, 60 Veggie Caps
• NOW Gaba 500mg, 100 Veg Capsules
• L-Tyrosine 500 mg 120 Capsules (Pack of 2)
• Now L-Tyrosine 500mg, 300 Capsules
• NOW Supplements, GABA (Gamma-Aminobutyric Acid)500 mg + B-6, 200 Veg Capsules