Copper citrate provides a highly absorbable form of the trace mineral copper. Copper is essential for energy production, iron metabolism, immune function, and the health of skin, hair, and connective tissues. Compared to copper oxide, this form absorbs more readily and is easier on the stomach.
People take copper citrate to help maintain immune defenses and energy. It also contributes to collagen formation and acts as an antioxidant. A typical dose provides 1 to 3 mg of elemental copper per day. Taking it with a meal reduces the chance of stomach upset.
Copper can build up if you take too much. Do not exceed the recommended intake, particularly if you use multiple supplements that contain copper. Taking too much copper may reduce zinc absorption and cause nausea or digestive upset.