Zinc is a trace mineral that plays many important roles in health: it supports skin health and wound-healing; it is essential for carbohydrate metabolism; it’s necessary for over 100 different enzyme systems, for proper vision, growth, skeletal integrity, tissue repair, sexual maturity; and it is an important antioxidant. Source Naturals OptiZinc is zinc monomethionine, a patented combination of zinc and the essential amino acid methionine. Research shows this formulation makes zinc more absorbable than other zinc compounds and therefore more readily available for the body’s needs. The suggested use is to take 1 tablet daily with a meal. Please contact our in-house customer support if you have any questions.