Pure Lab Vitamins Copper Glycinate - Copper is essential to human health. To the detriment of many individuals the importance of copper has been overlooked and overshadowed by its antagonist, zinc. When we supplement large doses of zinc (i.e. 50 mg or higher) in the interest of supporting a health condition, it competes with dietary copper for uptake into the bloodstream and can result in copper deficiency. This can affect oxygen utilization, immune function, repair and maintenance of connective tissue, and more. Pure Lab Vitamins Copper Glycinate is formulated with nature’s smallest essential amino acid, glycine, for optimal absorption from the gut into the bloodstream.