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Colistin (Polymyxin E) Peptide
Last-resort lipopeptide antibiotic for multidrug-resistant Gram-negatives.
What is Colistin (Polymyxin E)?
Colistin (Polymyxin E) is a polymyxin · infectious disease peptide studied for carbapenem-resistant acinetobacter, klebsiella, pseudomonas. Below is an educational overview of Colistin (Polymyxin E) peptide benefits, mechanism, common research protocols, dosage references, and known side effects.
Plain-Language Label Highlights
Brand names: Coly-Mycin M
Serious infections from multidrug-resistant Gram-negative bacteria (last-line antibiotic).
An old IV/inhaled antibiotic kept in reserve for very resistant infections — effective but harder on the kidneys.
- •Kidney injury
- •Numbness/tingling (neurotoxicity)
- •Slurred speech
- •Bronchospasm (inhaled)
- •Acute kidney injury
- •Neurotoxicity including respiratory paralysis
- •Apnea with concomitant neuromuscular blockers
- •Severe kidney impairment (use only if no alternative)
- •Concurrent nephrotoxic drugs when possible
Educational summary of the FDA prescribing information. Not a substitute for the full label or medical advice. Always discuss with a licensed prescriber.
Colistin (Polymyxin E) Mechanism of Action
Cationic cyclic lipopeptide that disrupts the outer membrane of Gram-negative bacteria by binding lipid A of LPS, causing membrane permeability and cell death.
Colistin (Polymyxin E) Research Areas & Benefits
Colistin (Polymyxin E) Dosage & Common Research Protocols
Loading dose + maintenance dosed in colistin base activity units; renal adjustment critical.
Protocols summarized for educational reference from published research. Not dosing guidance.
Colistin (Polymyxin E) Studies & Cited Research
Colistin in MDR Gram-negative infections
Effective salvage therapy with manageable nephrotoxicity in modern dosing.
Why we trust this source: Published in a peer-reviewed scientific journal with editorial and reviewer oversight.
Citations are linked to PubMed, Google Scholar, and Crossref searches so you can verify the source independently. All references are reviewed during our editorial passes (last reviewed June 1, 2026).
Colistin (Polymyxin E) Side Effects & Safety Considerations
- •FDA-approved.
- •Nephrotoxicity and neurotoxicity dose-limiting.
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Educational Information Only — Not Medical Advice
All content on this page is for educational and informational purposes only. It is not medical advice, diagnosis, or treatment. We make no claims that any peptide can diagnose, treat, cure, or prevent any disease. Peptides discussed are not FDA-approved for the indications listed unless explicitly stated otherwise.
Always consult a licensed healthcare provider before beginning any wellness protocol. Statements have not been evaluated by the FDA. Compounded preparations are subject to applicable state and federal regulations. Availability, eligibility, and pricing may vary.
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