Supplement Scholar
Mineral

Kelp Iodine

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Kelp Iodine. Brown seaweed iodine source.

How it works. Natural source of iodine and trace minerals.

What the research supports. 1 graded claims. Strongest: Iodine source (moderate).

How much to take. Typical dose: 150–500 mcg iodine.

Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.

Stacking. Pairs well with A high-quality multivitamin, Omega-3 (EPA/DHA).

Common forms. Available as Chelated form (glycinate, bisglycinate, citrate, malate), Inorganic salt (oxide, sulfate, chloride), Liquid ionic solution, Topical or transdermal preparation.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Kelp Iodine. Anecdotes are not medical advice.

Kelp Iodine. Brown seaweed iodine source.

Element I · Z = 53

What it is

Brown seaweed iodine source.

Food sources

Whole foods (leafy greens, legumes, nuts, seeds, seafood, animal proteins)Fortified foods such as cereals, breads, plant milks, and table saltMineral supplements as chelates, citrates, glycinates, or inorganic salts

Goals

Hormone Balance

How it works

Natural source of iodine and trace minerals.

Pathways

  • Natural source of iodine
  • trace minerals

Effects

  • +Iodine source supports

What the research supports

Iodine sourcemoderate

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
150–500 mcg iodine
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodEither with or without food.
Best formMost evidence is based on the chelated form (glycinate, bisglycinate, citrate, malate) form.
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Side effects & interactions

Common side effects

  • Hyperthyroidism risk
  • Arsenic

Medication interactions

Prescription medications (general)minor

Always disclose Kelp Iodine use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
  • Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.

Common forms

  • Chelated form (glycinate, bisglycinate, citrate, malate)
  • Inorganic salt (oxide, sulfate, chloride)
  • Liquid ionic solution
  • Topical or transdermal preparation

Key studies

8 studies cited in total.

PubMed: Kelp Iodine — Iodine source ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Kelp Iodine and "Iodine source". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Kelp Iodine — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Kelp Iodine and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Kelp Iodine — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Kelp Iodine and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

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