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: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation. Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products