Baby Safety / Compounds / Polyethylene glycol 400 (PEG-400)

Is Polyethylene glycol 400 (PEG-400) safe for babies and kids?

Moderate risk for kids

Infants may be exposed to Polyethylene glycol 400 (PEG-400) through residual monomer migration from food-contact plastics, bottles, and packaging. Immature hepatic conjugation and renal clearance prolong internal exposure.

What is polyethylene glycol 400 (peg-400)?

Also known as: Polyethylene glycol, Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy-.

CAS number: 25322-68-3
SMILES: [H]OCCO |lp:1:2,4:2,Sg:n:1,2,3::ht|

Risk for babies

Moderate risk

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

Prenatal exposure to residual Polyethylene glycol 400 (PEG-400) from food-contact materials is a concern due to potential developmental toxicity. Monomers may leach from plastics at elevated temperatures.

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

3 regulatory and scientific bodies have classified Polyethylene glycol 400 (PEG-400). The classifications differ — that's the data.

Agency	Year	Classification
US FDA / EFSA (PEG-400 — polyethylene glycol 400 — FDA-approved pharmaceutical excipient (inactive ingredient database; used as oral, topical, and parenteral vehicle); EFSA 2016 ADI of 10 mg/kg bw/day for polyethylene glycols as food additives; no carcinogenicity classification by IARC, NTP, US EPA, or EFSA for PEG polymers; manufacturing process concern: ethylene oxide (IARC Group 1) and 1,4-dioxane (IARC Group 2B) are potential process impurities from ethoxylation — controlled by pharmacopeial specification limits (ICH Q3C); USP and EP specifications for residual ethylene oxide and 1,4-dioxane in PEG excipients)	2016	no carcinogenicity classification; FDA-approved pharmaceutical excipient; EFSA ADI 10 mg/kg bw/day; process impurity concern: ethylene oxide (Group 1) and 1,4-dioxane (Group 2B) controlled by ICH Q3C limits; not classified by IARC, NTP, or EPA for carcinogenicity
EPA CTX / Genetox	—	Genotoxicity: positive (Ames: positive, 4 positive / 4 negative reports)
EPA CTX / Genetox	—	Genotoxicity: positive (Ames: positive, 4 positive / 4 negative reports)

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 polyethylene glycol 400 (peg-400)

Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
Occupational Environments — Factories, Warehouses, Transportation vehicles

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Polyethylene glycol 400 (PEG-400):

Physical/mechanical pest control (IPM)
Trade-offs: More labor-intensive. May not be sufficient for severe infestations.

Relative cost: 1.2-2×

Frequently asked questions

Is polyethylene glycol 400 (peg-400) safe for kids?

What products contain polyethylene glycol 400 (peg-400)?

Polyethylene glycol 400 (PEG-400) appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).

What should I do if my child is exposed to polyethylene glycol 400 (peg-400)?

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.

Why do regulators disagree about polyethylene glycol 400 (peg-400)?

Polyethylene glycol 400 (PEG-400) has been classified by 3 agencies including US FDA / EFSA (PEG-400 — polyethylene glycol 400 — FDA-approved pharmaceutical excipient (inactive ingredient database; used as oral, topical, and parenteral vehicle); EFSA 2016 ADI of 10 mg/kg bw/day for polyethylene glycols as food additives; no carcinogenicity classification by IARC, NTP, US EPA, or EFSA for PEG polymers; manufacturing process concern: ethylene oxide (IARC Group 1) and 1,4-dioxane (IARC Group 2B) are potential process impurities from ethoxylation — controlled by pharmacopeial specification limits (ICH Q3C); USP and EP specifications for residual ethylene oxide and 1,4-dioxane in PEG excipients), EPA CTX / Genetox, EPA CTX / Genetox, with differing conclusions. 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. See the regulatory consensus table on this page for the full picture.

See Polyethylene glycol 400 (PEG-400) in the baby app

Look up products containing polyethylene glycol 400 (peg-400), compare to alternatives, and explore the full data record.

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Sources (1)

FDA Inactive Ingredient Database PEG-400 Oral Topical Parenteral; EFSA 2016 ADI 10 mg/kg bw/day E1521; ICH Q3C Residual EO 1,4-Dioxane Limits; PEG Sensitization Anaphylaxis; Renal Accumulation Insufficient; No IARC NTP EPA Carcinogenicity Classification (2016) — regulatory

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 →