Side-by-Side Comparison · 2026

Defensin vs Magainin

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

Defensin
Antimicrobial Peptide

Defensins are a superfamily of small, cysteine-rich cationic antimicrobial peptides that form a critical component of innate immunity across virtually all multicellular organisms. In humans, alpha-defensins (HNP-1 to -4 in neutrophils; HD-5, HD-6 in intestinal Paneth cells) and b...

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Magainin
Antimicrobial Peptide

Magainins are cationic, alpha-helical antimicrobial peptides (AMPs) isolated from the skin of the African clawed frog Xenopus laevis by Michael Zasloff in 1987. They are among the founding members of the frog skin AMP family and established the concept of innate immune peptide de...

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Key Parameters
Parameter Defensin Magainin
Category Antimicrobial Peptide Antimicrobial Peptide
Research Research/Therapeutic Development Clinical (topical)
Half-Life Minutes-hours (tissue dependent) Minutes (plasma); hours (topical)
Typical Dose Research only Pexiganan cream 0.8%
Frequency N/A Twice daily (topical)
Route Endogenous; topical/intranasal (research) Topical (clinical), IV (research)
FDA Status No approval (research stage) Under review (pexiganan)

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Frequently Asked Questions
What is the difference between Defensin and Magainin?
Defensin: Defensins are a superfamily of small, cysteine-rich cationic antimicrobial peptides that form a critical component of innate immunity across virtually all multicellular organisms. In humans, alpha-def... Magainin: Magainins are cationic, alpha-helical antimicrobial peptides (AMPs) isolated from the skin of the African clawed frog Xenopus laevis by Michael Zasloff in 1987. They are among the founding members of ...
Which has a longer half-life, Defensin or Magainin?
Defensin half-life: Minutes-hours (tissue dependent). Magainin half-life: Minutes (plasma); hours (topical).
Can you stack Defensin and Magainin?
Defensin and Magainin 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.