3rd party lab tested for purity & quality. 500 Mg of l-methionine per vegetarian capsule - 120 capsules per bottle. Non-GMO & gluten-free. Proudly made in USA, gmp compliant, fda registered facility. No artificial color, flavor, or sweetener, no preservatives, no sugar, no milk, no corn, no soy, no egg, no lactose, no gluten, no wheat, no yeast, no fish. Sodium free.