Zinc is a trace mineral that is involved in more than 30 enzyme reactions in the body, and is an essential metal cofactor for one kind of superoxide dismutase SOD), a major class of antioxidant enzymes.These statements have not been evaluated by the Food and Drug Administration ...Zinc is a trace mineral that is involved in more than 30 enzyme reactions in the body, and is an essential metal cofactor for one kind of superoxide dismutase SOD), a major class of antioxidant enzymes.These statements have not been evaluated by the Food and Drug Administration FDA). These products are not meant to diagnosee treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.