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Bacitracin

Published: July 26, 2026Updated: August 26, 2026

Bacitracin is a topical antibiotic used to prevent and treat minor skin infections caused by susceptible bacteria. It is commonly applied to small cuts, scrapes, and burns to reduce the risk of infection and support the healing process. The medication is available over-the-counter and is often found in combination with other antibiotics in multi-antibiotic ointments.

Quick summary

A topical antibiotic ointment that prevents and treats minor skin infections by killing or inhibiting the growth of bacteria.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 26, 2026Editorial policy

Key facts at a glance

ATC
D06AX01
RxNorm
unknown
Generic
Bacitracin
Class
atc-d06
Brands
Rash Relief Antibacterial, Tri Biozene, Neo-Polycin HC, Neo-Polycin, Cuadriderma, Baciguent, Polycin, Lanabiotic, Spectrocin Plus, Bactine Antibiotic, Polysporin, Mycitracin Plus Pain Reliever
Availability
otc
Pregnancy
B
Lactation
safe
Half-life (h)
0
Onset (min)
0
Duration (h)
0
Routes
topical, ophthalmic
Forms
ointment, cream, powder
Regions
United States, Canada, United Kingdom, Australia, New Zealand, India, Germany
Monitoring
allergic reactions, skin irritation

This page is for informational purposes only.

Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.

Dosage and administration

adult (standard)tablet
Usual dose
500mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)tablet
Usual dose
250mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)tablet
Usual dose
400mg daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Single dose that may cause serious toxicity, particularly affecting renal function
Chronic overdose: Cumulative use leading to nephrotoxicity, especially in patients with pre-existing kidney conditions
Immediate actions
Gastric decontamination if ingested orally, supportive care, monitoring of renal function
Antidote
No specific antidote available(Treatment is supportive; early intervention improves outcomes)
Poison Control: 1-800-222-1222

Special Populations

10 groups
⚠

pregnancy

first trimester
caution
FDA Category
C
Dose Adjustment

use lowest effective dose

Key Recommendations

avoid use on large body surface areas or broken skin during pregnancy unless benefits outweigh risks

Monitor

monitor for any skin reactions in mother

Use with caution and monitor for adverse effects.

⚠

pregnancy

second trimester
caution
FDA Category
C
Dose Adjustment

use lowest effective dose

Key Recommendations

avoid use on large body surface areas or broken skin during pregnancy

Monitor

monitor for any skin reactions

Use with caution and monitor for adverse effects.

⚠

pregnancy

third trimester
caution
FDA Category
C
Dose Adjustment

use lowest effective dose

Key Recommendations

avoid use on large body surface areas or broken skin during pregnancy

Monitor

monitor for any skin reactions

Use with caution and monitor for adverse effects.

✓

lactation

breastfeeding
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

avoid applying to breast area before breastfeeding; wash hands before handling infant

Monitor

monitor infant for any skin reactions or unusual symptoms

✓

geriatric

elderly
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

use as directed for topical application; monitor for skin sensitivity

Monitor

monitor for skin irritation or allergic reactions

⚠

pediatric_age

infants and toddlers
caution
FDA Category
N
Dose Adjustment

use under medical supervision

Key Recommendations

avoid use on large areas or broken skin in infants; use only as prescribed

Monitor

monitor closely for skin irritation or sensitivity

Use with caution and monitor for adverse effects.

✓

pediatric_age

children
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

use as directed for topical application; avoid application to large areas

Monitor

monitor for skin reactions

✓

renal_impairment

mild to moderate
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

topical use has minimal systemic absorption; no dose adjustment required

Monitor

no specific monitoring required for renal function

✓

renal_impairment

severe
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

topical use has minimal systemic absorption; no special dose adjustment required

Monitor

standard monitoring for skin reactions

✓

hepatic_impairment

any
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

topical use has minimal systemic absorption; no dose adjustment required

Monitor

no specific monitoring required for hepatic function

Statistics and clinical data

prescribingFDA
2023

Commonly prescribed since

Value:1940s

General prescribing information

drug_classWHO
2023

Drug class

Value:Topical Antibiotic

Drug class information

usageMedical guidelines
2023

Common uses

Value:Skin infections, wound care, minor cuts and burns

Common therapeutic uses

mechanismPharmacology references
2023

Mechanism of action

Value:Inhibits bacterial cell wall synthesis

Pharmacological mechanism

Prevention and treatment of minor skin infections caused by susceptible gram-positive bacteria, including small cuts, scrapes, burns, and wounds. Often used for impetigo and other minor dermatological infections.

Bacitracin inhibits bacterial cell wall synthesis by blocking the formation of peptidoglycan, an essential component of the bacterial cell wall. This prevents bacteria from multiplying and allows the body's immune system to eliminate the infection.

For external use only on intact skin; should not be applied to deep wounds, serious burns, or large areas of damaged skin. May cause local skin irritation or allergic reactions in some individuals. Consult a healthcare provider if infection worsens or does not improve within 1 week of treatment.

Contraindications

Conditions and patient states where this medication should be avoided or used with caution.

Do not use (1)

ABSOLUTEhypersensitivity

Known allergy to this medication or its components

Use caution (1)

RELATIVEpregnancy

Consult healthcare provider for benefits vs risks assessment

Official drug label

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy