COGNITIVE HEALTH: DL-Phenylalanine is a combination of the well-tolerated essential amino acids, d-phenylalanine and l-phenylalanine. Together, these compounds help promote mental functioning and support positive outlook.* MEMORY AND LEARNING SUPPORT: l-Phenylalanine is a precursor to l-tyrosine, which converts to the neurotransmitters norepinephrine, epinephrine, dopamine and tyramine. l-Tyrosine and its metabolites may support emotional well-being, memory and learning.* MUSCLE/JOINT SUPPORT: d-Phenylalanine may promote the levels of certain endorphins, thereby calming stressed muscles and joints.* PURE INGREDIENTS: Pure Encapsulations manufactures a line of hypoallergenic, research-based dietary supplements. Products are meticulously formulated using pure ingredients designed to deliver predictable results for the benefit of all patients, even the most sensitive.* FREE FROM: Pure Encapsulations products are free from wheat, gluten, egg, peanuts, magnesium stearate, hydrogenated fat, artificial sweeteners and colors, and other unnecessary excipients. Any product containing ingredients derived from allergens, such as soy, dairy or shellfish is clearly labeled. * These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.