Baby Safety / Compounds / Iodine (elemental)

Is Iodine (elemental) safe for babies and kids?

Context-dependent for kids

Infants are more vulnerable to Iodine (elemental) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What is iodine (elemental)?

Also known as: iodine, Molecular iodine, Diiodine, Iodine crystals.

CAS number
7553-56-2
Molecular formula
I2
Molecular weight
253.8089 g/mol
SMILES
II
PubChem CID
807

Risk for babies

Context-dependent

Infants are more vulnerable to Iodine (elemental) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Context-dependent

Regulatory consensus

2 regulatory and scientific bodies have classified Iodine (elemental). The classifications differ — that's the data.

AgencyYearClassificationNotes
EDC Assessment—Confirmed endocrine disruptor
Regulatory Framework—Regulated under dietary supplement frameworks (DSHEA in US, EU Novel Food)

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter iodine (elemental)

  • Consumer Products — iodized salt, supplements, thyroid medication

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Iodine (elemental):

  • Food-based nutrient sources; Whole food diet
    Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.
    Relative cost: 1.2-2×

Frequently asked questions

Is iodine (elemental) safe for kids?

Infants are more vulnerable to Iodine (elemental) than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What products contain iodine (elemental)?

Iodine (elemental) appears in: iodized salt (Consumer products); supplements (Consumer products).

What should I do if my child is exposed to iodine (elemental)?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

See Iodine (elemental) in the baby app

Look up products containing iodine (elemental), compare to alternatives, and explore the full data record.

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Sources (1)
  1. PubChem (2026) — database

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →