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Sodium Iodide
Sodium Iodide
Low concern
Sodium iodide supplies essential iodine needed for thyroid hormone synthesis. Adequate intake (RDA 150 µg/day adults).
Found in
7 products
What it is
An inorganic salt (NaI) used as a nutritional iodine source.
Nutrient/dietary supplement, fortificant in iodized salt and infant formula; provides essential iodine.
Why it's flagged
- thyroid effects at chronic intakes above UL (1,100 µg/day)
What regulators actually say
"In dietary supplements, iodine is often present as potassium iodide or sodium iodide. ... The UL for iodine in adults is 1,100 mcg per day."
Regulatory status
United States — FDA
GRAS for use as a nutrient (21 CFR 184.1).
European Union — EFSA
Authorized as a source of iodine for food fortification (Reg. 1925/2006).
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