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Dietary Supplement Amino Acid ComplexSupports Energy ProductionSuitable For Vegetarians Manganese is an essential trace mineral involved in many key functions in the body. It plays a role in energy production in normal bone formation and development and in the synthesis of many vital cellular biochemicals such as collagen prothrombin urea mucopolysaccharides fatty acids and proteins. In addition manganese is a cofactor for superoxide dismutase one of the body's main protective antioxidant systems. This manganese is specially complexed with amino acids to protect mineral value and enhance assimilation.