Copper
Vitamins & MineralsCAS: 7440-50-8
This is what the ingredient is.
Copper is an essential trace mineral needed for iron metabolism, connective tissue, and brain development.
Here is why it shows up on the label.
It works as a nutrient. Found in shellfish, nuts, seeds; added to some fortified foods.
Here is what food agencies say.
US agencies treat it as an essential nutrient. European food agencies note: UL of 5 mg/day.
Here is what research has found.
Essential for enzyme function and iron absorption. Deficiency and toxicity both possible but rare.
Here are a few things worth knowing.
Excess can cause liver damage. Wilson's disease patients must avoid copper. Normal dietary intake is safe.
Sources
- FDA
- NIH ODS
How to read this page
We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.
v1.0Updated 9/12/2026