Polymyxin B Inj

  • Bacterial infections

Polymyxin B Inj Generic Name & Formulations

General Description

Polymyxin B sulfate 500,000units/vial; pwd for IM, intrathecal inj, IV drip or ophthalmic use after reconstitution.

Pharmacological Class


How Supplied

Contact supplier.

Polymyxin B Inj Indications


Susceptible infections due to P. aeruginosa including UTIs, meninges, bloodstream, and eye infections. Other serious susceptible infections including H. influenza meningeal, E. coli UTIs, and bacteremia due to A. aerogenes and K. pneumoniae.

Polymyxin B Inj Dosage and Administration

Adults and Children

Infants: up to 40,000units/kg per day IV or IM inj. Adults and children: IV: 15,000–25,000units/kg per day in divided doses every 12 hours; max 25,000units/kg per day. IM: 25,000–30,000units/kg per day in divided doses every 4–6 hours. P. aeruginosa meningitis: Give by intrathecal inj only. <2yrs: 20,000units once daily for 3–4 days or 25,000units once every other day, continue with 25,000units once every other day; >2yrs: 50,000units once daily for 3–4 days, then 50,000units once every other day; both: treat for at least 2 weeks after negative CSF cultures and sugar content normalized. Ophthalmic: see literature. Renal impairment: adjust or reduce dose.

Polymyxin B Inj Contraindications

Not Applicable

Polymyxin B Inj Boxed Warnings

Not Applicable

Polymyxin B Inj Warnings/Precautions


Renal impairment. Monitor renal function before and during therapy; discontinue if nephrotoxicity occurs. Pregnancy: not recommended.

Polymyxin B Inj Pharmacokinetics

See Literature

Polymyxin B Inj Interactions


Avoid other neurotoxic and/or nephrotoxic drugs (eg, bacitracin, aminoglycosides, colistin). May potentiate neuromuscular blockade with anesthetics and/or muscle relaxants.

Polymyxin B Inj Adverse Reactions

Adverse Reactions

Nephrotoxicity (eg, albuminuria, azotemia, cylindruria), neurotoxicity (eg, flushing, dizziness, paresthesias), meningeal irritation (intrathecal), drug fever, rash, inj site pain, thrombophlebitis; respiratory paralysis (discontinue if occurs).

Polymyxin B Inj Clinical Trials

See Literature

Polymyxin B Inj Note


Formerly known under the brand name Aerosporin.

Polymyxin B Inj Patient Counseling

See Literature