Zinc Supplements

These products are sold separately or as part of multivitamin and mineral combinations. Common forms include zinc gluconate, zinc acetate and zinc sulfate, with tablets, capsules, gummies, liquids and lozenges available in a range of strengths. Compare the amount per serving and include zinc from other supplements when calculating your daily intake. It is unclear whether one common supplemental form is better than another, and excessive long-term intake can cause nausea, reduced copper levels and other problems. The adult upper intake level is 40 milligrams per day from all sources, unless a different amount is used under medical supervision, and zinc can interact with certain antibiotics and other medicines.