NOW - L-Tyrosine 500 mg - 120 Capsule(s) - NPN: 80004769 L-Tyrosineis a conditionally indispensable amino acid required for the production of the neurotransmitters dopamine, adrenaline, and noradrenaline, as well as for the skin pigment, melanin. Noradrenaline (norepinephrine) and adrenaline (epinephrine) are the main actors in the body’s response to acute stress and, along with dopamine, help to support a positive mood and mental alertness. In addition, L-Tyrosine is especially critical for the normal function of the thyroid gland.INGREDIENTSL-Tyrosine ... 500 MGNon Medicinal IngredientsMagnesium Stearate, Gelatin, Water, Stearic AcidDIRECTIONS & USETake 2 capsules 1-2 times daily between meals. Take up to one hour before, or during periods of physical stress. For occasional use.