Iodine
Vitamins & MineralsCAS: 7553-56-2
This is what the ingredient is.
Iodine is an essential trace mineral required for thyroid hormone production. Often added to salt (iodized salt).
Here is why it shows up on the label.
It works as a nutrient. Added to table salt; found naturally in seafood, dairy, and eggs.
Here is what food agencies say.
US agencies treat it as an essential nutrient. European food agencies note: UL of 600 mcg/day.
Here is what research has found.
Essential for thyroid function. Deficiency causes goiter and developmental issues.
Here are a few things worth knowing.
Excess can affect thyroid function in sensitive individuals. Those with thyroid conditions should consult healthcare providers.
Sources
- FDA
- NIH ODS
- WHO
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