Pure Encapsulations DL-Phenylalanine Supports Emotional Well-Being and Musculoskeletal Relaxation DL-Phenylalanine is a combination of the well-tolerated essential amino acids, d-phenylalanine and l-phenylalanine. Together, these amino acids have been studied for their potential to promote mental functioning and to support positive mood. L-Phenylalanine is a precursor to L-tyrosine, which is converted to the catecholamine neurotransmitters norepinephrine, epinephrine, dopamine, and tyramine. L-Tyrosine and its metabolites play a role in emotional well-being, memory, and learning. d-Phenylalanine may promote the levels of certain endorphins, which play a role in maintaining muscle and joint comfort. Key Benefits and Features: Ages 18 and up Supports emotional well-being Supports production of neurotransmitters required for emotional well-being A combination of well-tolerated essential amino acids Made with high-quality ingredients backed by verifiable science Ingredients Serving Size: 2 Vegetarian Capsules Amount/Serving DL-Phenylalanine (free-form) 1,000 mg Other Ingredients: Vegetarian capsule (cellulose, water), and ascorbyl palmitate. Does Not Contain: Wheat, soy, dairy, eggs, tree nuts, peanuts, gluten, artificial colors, flavors, sweeteners, coating, shellacs, GMOs, unnecessary binders, fillers, preservatives, magnesium stearate, trans fat, or hydrogenated oils. Gluten Free, Non-GMO, Vegan, Vegetarian, Hypoallergenic Suggested Use As a dietary supplement, take 2 capsules, 2-3 times daily, between meals. Warning: If you are pregnant or lactating, have any health condition, or are taking any medication, consult your health professional before use. PHENYLKETONURICS: CONTAINS PHENYLALANINE Storage: Store in a cool, dry place. More Info. dl-Phenylalanine (free-form) is synthetically produced Vitamin C (ascorbyl palmitate) is derived from corn dextrose fermentation and palm oil