Because copper and zinc compete with each other for absorption, an individual taking a high amount of zinc (for example, 50 mg daily for an extended time period) can develop a copper deficiency. A copper deficiency can render many cell types, including fat cells and blood cells, more susceptible to oxidation. For this reason, zinc supplementation should be accompanied by copper supplementation.
In a clinical setting, copper supplementation protected red blood cells from oxidation.
Thorne’s Copper Bisglycinate provides an optimally absorbed form of copper.