What is LL-37 used for?
LL-37 is most commonly used for users with chronic biofilm-associated infections; wound-healing contexts; stack add-on for aggressive immune protocols. A germ-fighter your immune system already makes on its own. It's a cathelicidin-derived antimicrobial peptide used for chronic infections and biofilm-associated issues. Human evidence for LL-37 is limited, so these are the goals people pursue with it, not guaranteed outcomes.
What people use LL-37 for
- Users with chronic biofilm-associated infections
- Wound-healing contexts
- Stack add-on for aggressive immune protocols
References
- LL-37, the truncation product of cathelicidin, antimicrobial review — Wang G, Curr Top Med Chem, 2020
- Human antimicrobial/host defense peptide LL-37 may prevent the spread of a local infection through multiple mechanisms: an update — Svensson D et al., Inflammation Research, 2025
- Significance of the LL-37 Peptide Delivered from Human Cathelicidin in the Pathogenesis, Treatment, and Diagnosis of Sepsis — Mankowska A et al., Archivum Immunologiae et Therapiae Experimentalis, 2025
Pepdex is an editorial reference, not medical advice. Peptides vary in legal and approval status by country, many are research compounds without full human safety data. Talk to a qualified clinician before starting anything.
More on LL-37
Last updated 2026-06-15.