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DOUBLE STRENGTH VEGAN TABLETS/ESSENTIAL AMINO ACID: Lysine is an essential amino acid that must be obtained through diet or supplementation. SUPPORTS COLLAGEN SYNTHESIS*: Necessary for the production of all proteins in the body and is required for the maintenance of the structural proteins collagen and elastin.* CERTIFICATIONS/CLASSIFICATIONS: Soy Free, Non-GMO, Vegan/Vegetarian, Nut Free, Made without Gluten, Dairy Free, Egg Free, Kosher GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). Packaged in the USA by a family owned and operated company since 1968.