COPPER GLUCONATE is a copper salt of D-gluconic acid that displays a light blue to bluish-green color. It is prepared by the reaction of gluconic acid solutions with cupric oxide or basic cupric carbonate. According to the good manufacturing or feeding practice by the FDA, copper gluconate is used as a nutrient or dietary supplement and is generally recognized as safe for use at a level not exceeding 0.005 percent. Copper Gluconate can be used as a dietary supplement and as a nutrient. Copper aids in the absorption of iron, in the formation of red blood cells and the proper bone formation and maintenance.