Elemental Zinc & Copper Zinc is required for normal growth and development, but it also functions as an antioxidant.* Studies also show it can help maintain healthy immune function.* Elemental Zinc contains 15 mg of ionic zinc and 2 mg of copper per serving (1 ml). In addition, this formula is balanced with other minerals, including copper. Zinc and copper need to be balanced in order to maintain proper ratios in the body; therefore, MRI has included copper in this formula.