Overview
Standard inorganic iodine — thyroid hormone precursor and radioprotectant.
- Whole foods (leafy greens, legumes, nuts, seeds, seafood, animal proteins)
- Fortified foods such as cereals, breads, plant milks, and table salt
- Mineral supplements as chelates, citrates, glycinates, or inorganic salts
- Chelated form (glycinate, bisglycinate, citrate, malate)
- Inorganic salt (oxide, sulfate, chloride)
- Liquid ionic solution
- Topical or transdermal preparation
Forms & variants of Iodine
Different chemical forms of Iodine behave differently. Browse each form's mechanism, bioavailability, and best-use context.
Mechanism of action
Iodide is concentrated by thyroid NIS pump and incorporated into thyroglobulin.
- · Thyroid hormone synthesis
Effects on the body
Organ system effects
Evidence-based benefits
Prevents iodine deficiency goiter
Strong evidencePotential side effects
- · Hashimoto flare at supraphysiologic dose
- · Iodine-induced hyperthyroidism
Drug interactions
Supplement interactions
- A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
- Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.
No specific avoidances listed.
Dosing & bioavailability
Where to buy
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Third-party testedIndependently verified Potassium Iodide — look for USP, NSF, or Informed Sport seals on the label for purity and dose accuracy.Potassium Iodide third party tested NSF
CapsulesPre-measured Potassium Iodide capsules — easiest for travel and consistent daily dosing without scoops or scales.Potassium Iodide capsules
PowderBulk unflavored Potassium Iodide powder — best cost-per-gram and flexible dosing for stacking or mixing into drinks.Potassium Iodide powder unflavored
Best sellersMost-purchased Potassium Iodide products on Amazon — a quick way to see what's reviewed widely before you commit.Potassium Iodide best sellerScientific evidence8Show studiesHide studies
Potassium iodide for thyroid protection in radiation exposure
Reiners C, Schneider R
Review of KI prophylaxis post-Chernobyl/Fukushima.
Effective in preventing radioactive-iodine thyroid uptake when timed correctly.
PubMed: Potassium Iodide — Prevents iodine deficiency goiter
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PubMed: Potassium Iodide — randomized controlled trial
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PubMed: Potassium Iodide — meta-analysis
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PubMed: Potassium Iodide — pharmacokinetics
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PubMed: Potassium Iodide — safety adverse events
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PubMed: Potassium Iodide — dose response
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Google Scholar: Potassium Iodide — clinical evidence
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