Baby Safety / Compounds / Lidocaine

Is Lidocaine safe for babies and kids?

Moderate risk for kids

Moderate risk. Used in neonatal medicine under medical supervision. Immature hepatic metabolism prolongs half-life.

What is lidocaine?

Lidocaine is a local anesthetic, amide-type anesthetic, antiarrhythmic agent (Class Ib).

The IUPAC name is 2-(diethylamino)-N-(2,6-dimethylphenyl)acetamide.

Also known as: Xylocaine, lignocaine, 2-(diethylamino)-N-(2,6-dimethylphenyl)acetamide, Lidoderm.

IUPAC name: 2-(diethylamino)-N-(2,6-dimethylphenyl)acetamide
CAS number: 137-58-6
Molecular formula: C14H22N2O
Molecular weight: 234.34 g/mol
SMILES: CCN(CC)CC(=O)NC1=C(C)C=CC(C)=C1
PubChem CID: 3676

Risk for babies

Moderate risk

Moderate risk. Used in neonatal medicine under medical supervision. Immature hepatic metabolism prolongs half-life.

Neonates have immature CYP1A2 and CYP3A4 activity, resulting in prolonged lidocaine half-life (up to 3 hours vs 1.5-2 hours in adults). Reduced protein binding in neonates increases free drug fraction. EMLA cream is used for procedural pain in infants >37 weeks gestational age with careful dose limitation. Prilocaine component of EMLA (not lidocaine) carries the methemoglobinemia risk.

What to do: Use only under medical supervision. Limit application area and duration. Monitor for signs of systemic toxicity.

Risk for pregnant and nursing people

Low risk

FDA Pregnancy Category B. No evidence of fetal risk in animal studies. Widely used in obstetric anesthesia (epidural, local infiltration).

Lidocaine is FDA Pregnancy Category B — animal reproduction studies have not demonstrated fetal risk, and there are no adequate controlled studies in pregnant women. It is one of the most commonly used local anesthetics in obstetric practice for epidural analgesia, pudendal block, and perineal infiltration. Lidocaine crosses the placenta but fetal/neonatal effects are minimal at therapeutic maternal doses.

What to do: Safe for use in pregnancy at standard doses under medical supervision. Widely used in obstetric anesthesia without evidence of teratogenicity.

Regulatory consensus

4 regulatory and scientific bodies have classified Lidocaine. The classifications differ — that's the data.

Agency	Year	Classification	Notes
FDA	—	Approved prescription drug (injectable, IV) and OTC (topical, up to 4-5%)	FDA-approved for local/regional anesthesia, ventricular arrhythmias (IV), and OTC topical pain relief. Pregnancy Category B.
WHO	—	Essential Medicine	Listed on WHO Model List of Essential Medicines — local anesthetic section. Considered one of the safest and most effective medicines.
EMA	—	Authorized pharmaceutical	Authorized across EU member states as prescription and non-prescription (topical) pharmaceutical. Subject to EU pharmaceutical regulations.
DEA	—	Not a controlled substance	Lidocaine is not a scheduled/controlled substance in the US. However, it is sometimes used as a cutting agent for illicit drugs, which is a law enforcement concern.

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 lidocaine

Dental Anesthesia — Xylocaine dental cartridges, dental lidocaine with epinephrine
Most commonly used local anesthetic in dentistry worldwide
Topical Pain Relief — Lidoderm patches (5%), EMLA cream (lidocaine + prilocaine), lidocaine creams and gels
OTC and prescription topical formulations for localized pain
Injectable Anesthesia — Xylocaine injection, epidural anesthesia solutions, nerve block solutions
Prescription injectable for local/regional anesthesia and nerve blocks
Antiarrhythmic — IV lidocaine for ventricular tachycardia
Class Ib antiarrhythmic for acute management of ventricular arrhythmias (ACLS protocol)
Hemorrhoid Treatments — RectiCare, hemorrhoidal lidocaine ointments
Topical anorectal formulations for hemorrhoid pain relief
Personal Products — numbing sprays, desensitizing products
Various OTC products utilizing local anesthetic properties

Frequently asked questions

Is lidocaine safe for kids?

Moderate risk. Used in neonatal medicine under medical supervision. Immature hepatic metabolism prolongs half-life.

What products contain lidocaine?

Lidocaine appears in: Xylocaine dental cartridges (dental anesthesia); dental lidocaine with epinephrine (dental anesthesia); Lidoderm patches (5%) (topical pain relief); EMLA cream (lidocaine + prilocaine) (topical pain relief); Xylocaine injection (injectable anesthesia).

What should I do if my child is exposed to lidocaine?

Use only under medical supervision. Limit application area and duration. Monitor for signs of systemic toxicity.

Why do regulators disagree about lidocaine?

Lidocaine has been classified by 4 agencies including FDA, WHO, EMA, DEA, 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 Lidocaine in the baby app

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

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Sources (4)

— regulatory_database
— regulatory_agency
— clinical_reference
— expert_curation

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 →