Zinc is a dietary supplement containing amino-chelated zinc (organic form), a patented complex of zinc and L-methionine in a 1:1 ratio (L-OptiZinc®), with high bioavailability and absorption by the body. This amino-chelated form is highly bioavailable. Zinc chelated with the amino acid L-methionine (L-OptiZinc®) allows this mineral to be better absorbed and retained in tissues for longer than other forms of zinc. The chelate protects zinc from the binding and precipitation of phosphates, phytates, and tannins in the diet, thereby maintaining its absorption. Zinc is an essential trace mineral and is indispensable for numerous functions. Some of these include: The normal function of the immune system. The maintenance of normal bones, hair, nails, and skin. Normal cognitive function. Normal fertility and reproduction. The process of cell division. The normal metabolism of vitamin A, fatty acids, carbohydrates, and macronutrients. To normal protein synthesis. To the maintenance of normal vision.