LL-37
Reviewed by Fat Man in the Arena · Updated March 2026
Key Takeaway
LL-37 is a human antimicrobial peptide (cathelicidin) that plays a key role in innate immune defense against bacteria, viruses, and fungi.
How it works
Disrupts microbial cell membranes and modulates immune response. Promotes wound healing and has direct antimicrobial activity.
Benefits
- Antimicrobial defense
- Immune modulation
- Wound healing support
Side effects
- Injection site irritation
- Limited human data outside natural production
Dosing protocol
Typical Dose
50-100 mcg daily
Frequency
Once daily
Not FDA-approved. Used primarily in research contexts.
Stacks with LL-37
Goals
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Medical Disclaimer: This content is for informational and educational purposes only. It is not intended as medical advice or a substitute for professional medical consultation, diagnosis, or treatment. Always consult a qualified healthcare provider before starting any peptide protocol.