Is 80 mg zinc (in supplements and diet) and 1 mg copper safe to take for six weeks? The eye formula has 80 mg zinc and 2 mg copper.

Zinc side effects. Zinc is likely safe for most adults when applied to the skin, or when taken by mouth in amounts not larger than 40 mg per day. Routine zinc supplementation is not recommended without the advice of a healthcare professional. In some people, zinc might cause nausea, vomiting, diarrhea, metallic taste, kidney and stomach damage, and other side effects. Using zinc on broken skin may cause burning, sti.