For laboratory research use only — not for human or veterinary consumption.
The Peptide Index
PI-030

LL-37

Cathelicidin-derived antimicrobial peptide

The only human cathelicidin antimicrobial peptide, studied for direct antimicrobial activity as well as roles in inflammation and wound healing. Human therapeutic use is investigational.

Mechanism under study

LL-37 disrupts microbial membranes and neutralizes bacterial LPS, while also acting as an immune modulator — recruiting immune cells and influencing angiogenesis and wound repair in preclinical studies.

Research-reported dosing

No established human dosing; work is largely preclinical, spanning antimicrobial, wound-healing, and immunomodulatory models.

Reconstitution

5 mg vial + 2 mL bacteriostatic water = 2500 mcg/mL.

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Dosing figures describe how this compound appears in the research literature and research-community references. They are not a recommendation for human use.

LL-37 FAQ

What is LL-37?

The only human cathelicidin antimicrobial peptide, studied for direct antimicrobial activity as well as roles in inflammation and wound healing. Human therapeutic use is investigational.

What is the half-life of LL-37?

Short; rapidly degraded by proteases in most reported settings.

What is the research-reported dosing for LL-37?

No established human dosing; work is largely preclinical, spanning antimicrobial, wound-healing, and immunomodulatory models.

How is LL-37 reconstituted?

5 mg vial + 2 mL bacteriostatic water = 2500 mcg/mL.

Is LL-37 FDA-approved?

No — LL-37 is investigational and not FDA-approved. It is sold for laboratory research use only.

References

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