Baby Safety / Compounds / Bismuth subsalicylate

Is Bismuth subsalicylate safe for babies and kids?

Context-dependent for kids

(Babies-specific data is limited; this page draws from human pregnant context.) Pregnancy alters the metabolism and distribution of Bismuth subsalicylate, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

What is bismuth subsalicylate?

The IUPAC name is Bismuth 2-hydroxybenzoate oxide.

Also known as: Bismuth 2-hydroxybenzoate oxide, Kaopectate, 62TEY51RR1, Corrective.

IUPAC name
Bismuth 2-hydroxybenzoate oxide
CAS number
14882-18-9
Molecular formula
C7H5BiO4
Molecular weight
362.10 g/mol
SMILES
C1=CC=C(C(=C1)C(=O)[O-])[O-].[OH-].[Bi+3]
PubChem CID
53629521

Risk for babies

Context-dependent

Pregnancy alters the metabolism and distribution of Bismuth subsalicylate, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of Bismuth subsalicylate, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

2 regulatory and scientific bodies have classified Bismuth subsalicylate. The classifications differ — that's the data.

AgencyYearClassificationNotes
EPA——
FDA——

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 bismuth subsalicylate

  • over-the-counter medications (Pepto-Bismol)
  • pharmaceutical formulations
  • stomach remedies

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Bismuth subsalicylate:

  • Loperamide (Imodium)
    Trade-offs: Different mechanism (opioid receptor agonist). Not antibacterial. Risk of cardiac arrhythmia at supratherapeutic doses.
    Relative cost: Similar
  • Calcium carbonate antacid
    Trade-offs: No antibacterial or anti-nausea effect. Constipation at high doses. Milk-alkali syndrome risk.
    Relative cost: Lower

Frequently asked questions

What products contain bismuth subsalicylate?

Bismuth subsalicylate appears in: over-the-counter medications (Pepto-Bismol); pharmaceutical formulations; stomach remedies.

See Bismuth subsalicylate in the baby app

Look up products containing bismuth subsalicylate, compare to alternatives, and explore the full data record.

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Sources (1)
  1. ATSDR Toxicological Profile — CAS 14882-18-9 — reference

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 →