General Dosage
150mcg daily for adults
Maximum dose: 1,100mcg/day (NIH UL for adults); higher doses can cause thyroid dysfunction
Iodine Dosage Guide
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Dosage Recommendations
General recommendation: 150mcg daily for adults
Timing: With food; morning preferred as thyroid hormones follow a diurnal rhythm • Take with food for best absorption.
Dosage by Condition
| Condition | Recommended Dose | Evidence |
|---|---|---|
| General thyroid support | 150mcg daily | Strong |
| Pregnancy | 220mcg daily | Strong |
| Lactation | 290mcg daily | Strong |
Upper limit: 1,100mcg/day (NIH UL for adults); higher doses can cause thyroid dysfunction
Timing & Absorption
With food; morning preferred as thyroid hormones follow a diurnal rhythm
Best taken with food for optimal absorption.
References
- Bath SC, Steer CD, Golding J, Emmett P, Rayman MP (2013). Effect of inadequate iodine status in UK pregnant women on cognitive outcomes in their children. The Lancet. DOI PubMed
- Zimmermann MB, Jooste PL, Pandav CS (2008). Iodine-deficiency disorders. The Lancet. DOI PubMed
- Leung AM, Braverman LE (2014). Consequences of excess iodine. Nature Reviews Endocrinology. DOI PubMed