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Iodine Dosage Guide

Evidence:Strong
·

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

General Dosage

150mcg daily for adults

Maximum dose: 1,100mcg/day (NIH UL for adults); higher doses can cause thyroid dysfunction

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

General thyroid support
150mcg dailyStrong
Pregnancy
220mcg dailyStrong
Lactation
290mcg dailyStrong

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.

Full Iodine Guide

References

  1. ObservationalBath 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
  2. ReviewZimmermann MB, Jooste PL, Pandav CS (2008). Iodine-deficiency disorders. The Lancet. DOI PubMed
  3. ReviewLeung AM, Braverman LE (2014). Consequences of excess iodine. Nature Reviews Endocrinology. DOI PubMed
  4. Meta-analysisEveleigh ER, Coneyworth L, Welham SJM (2023). Systematic review and meta-analysis of iodine nutrition in modern vegan and vegetarian diets.. The British journal of nutrition. DOI PubMed
  5. Meta-analysisGreenwood DC, Webster J, Keeble C, Taylor E, et al. (2023). Maternal Iodine Status and Birth Outcomes: A Systematic Literature Review and Meta-Analysis.. Nutrients. DOI PubMed
  6. Azevedo FM, Machamba AAL, Candido AC, Pinto CA, et al. (2023). Correlation Between Drinking Water and Iodine Status: a Systematic Review and Meta-analysis.. Biological trace element research. DOI PubMed
  7. Candido AC, Azevedo FM, Silva DLF, Ribeiro SAV, et al. (2023). Effects of iodine supplementation on thyroid function parameter: Systematic review and meta-analysis.. Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS). DOI PubMed