Overall, we would recommend Carlson – Chelated Copper, 5 mg to anyone looking for a copper supplement that promotes cardiovascular health, nerve function, and immune support. However ...

of 10 milligrams (mg), or 10,000 mcg, daily for adults. Under this amount, side effects are uncommon. Most people get enough copper from food alone, so a supplement is usually unnecessary.

High doses of zinc taken over the long term (50 mg or more per day for 10 weeks or longer) can also cause copper deficiency. ...