Side-by-Side Comparison · 2026

Colistin vs Ponericin

Colistin vs Ponericin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Colistin
Antimicrobial Peptide

Colistin (polymyxin E) is a cyclic lipopeptide antibiotic structurally related to polymyxin B, differing in the fatty acid chain and one amino acid residue. Like polymyxin B, colistin targets LPS and disrupts outer membranes of Gram-negative bacteria....

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Ponericin
Antimicrobial Peptide

Ponericins are a family of antimicrobial peptides isolated from the venom of the ant Pachycondyla goeldii. They adopt alpha-helical conformations in membrane environments and display broad-spectrum antibacterial and insecticidal activity....

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Key Parameters
Parameter Colistin Ponericin
Category Antimicrobial Peptide Antimicrobial Peptide
Research FDA Approved Preclinical
Half-Life Colistimethate (prodrug): 2-3 hours; active colistin: 14 hours Short
Typical Dose 2.5-5 mg/kg/day CBA IV N/A (research only)
Frequency Every 8-12 hours N/A
Route IV (colistimethate) / Inhaled / Topical Topical / Systemic (research)
FDA Status Approved (systemic Gram-negative infections) Not approved

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Frequently Asked Questions
What is the difference between Colistin and Ponericin?
Colistin: Colistin (polymyxin E) is a cyclic lipopeptide antibiotic structurally related to polymyxin B, differing in the fatty acid chain and one amino acid residue. Like polymyxin B, colistin targets LPS and ... Ponericin: Ponericins are a family of antimicrobial peptides isolated from the venom of the ant Pachycondyla goeldii. They adopt alpha-helical conformations in membrane environments and display broad-spectrum an...
Which has a longer half-life, Colistin or Ponericin?
Colistin half-life: Colistimethate (prodrug): 2-3 hours; active colistin: 14 hours. Ponericin half-life: Short.
Can you stack Colistin and Ponericin?
Colistin and Ponericin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.