L-Tyrosine 500 mgItem Description Used for formation of T3 and T4 thyroid hormones, L tyrosine is also an important precursor for brain stimulating catecholamines (dopamine, norepinephrine, and epinephrine) which support stress response mechanisms and the ability to concentrate.* Supplies 500 mg of L tyrosine USP per vegetarian capsule. Product Info Serving Size: 1 Vegetable Capsule Servings Per Container: 100 Disclaimer: We work to ensure that product information is