Side-by-Side Comparison · 2026

Polymyxin B vs Ponericin

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

Polymyxin B
Antimicrobial Peptide

Polymyxin B is a cyclic lipopeptide antibiotic from Bacillus polymyxa that was approved in the 1960s and fell out of favor due to nephrotoxicity, but has experienced a major clinical resurgence as a last-resort treatment for carbapenem-resistant Gram-negative infections (Acinetob...

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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 Polymyxin B Ponericin
Category Antimicrobial Peptide Antimicrobial Peptide
Research FDA Approved Preclinical
Half-Life 6-8 hours Short
Typical Dose 15,000-25,000 units/kg/day IV N/A (research only)
Frequency Every 12 hours IV N/A
Route IV / IM / Topical / Intrathecal Topical / Systemic (research)
FDA Status Approved (systemic Gram-negative infections) Not approved

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Frequently Asked Questions
What is the difference between Polymyxin B and Ponericin?
Polymyxin B: Polymyxin B is a cyclic lipopeptide antibiotic from Bacillus polymyxa that was approved in the 1960s and fell out of favor due to nephrotoxicity, but has experienced a major clinical resurgence as a l... 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, Polymyxin B or Ponericin?
Polymyxin B half-life: 6-8 hours. Ponericin half-life: Short.
Can you stack Polymyxin B and Ponericin?
Polymyxin B 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.