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LL-37

Also known as: Cathelicidin, CAP-18

Emerging ResearchImmune & LongevityProvider Rx Required

How It Works

Human cathelicidin antimicrobial peptide. Part of innate immune system. Directly kills bacteria, fungi, and viruses. Also modulates inflammation and promotes wound healing.

What It's Used For

AntimicrobialImmune defenseBiofilm disruptionWound healingAnti-Lyme support

Administration

Route: Subcutaneous injection

Typical Cycle: 4-8 weeks

Safety & Side Effects

Possible Side Effects

⚠Injection site reactions
⚠Flu-like symptoms (immune activation)

Contraindications

✘Pregnancy
✘Autoimmune conditions (caution)

Research Summary

Endogenous antimicrobial peptide with broad-spectrum activity. Disrupts biofilms. Used clinically for chronic infections including Lyme co-infections.

References

Vandamme D et al. Cell Immunol. 2012

Legal & Availability

Research chemical / Compounding pharmacy

This peptide requires a prescription from a licensed provider.

Dosing Protocol

Standard: 50-100mcg per dose

Frequency: Daily or every other day

Timing: Any time

Notes: Used for chronic infections and biofilm-related conditions

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Unlock Full Dosing Protocol

Specific dosing, frequency, timing, cycling schedules, and stacking guidance are available with a BioRoot AI Pro subscription.

Stacks Well With

Thymosin Alpha-1

Immune enhancement, Chronic infections

BPC-157

Injury repair, Gut healing

Full stacking protocols and cycling schedules available with Pro subscription.

Is LL-37 Right for You?

Our AI analyzes your symptoms, labs, and medical history to determine if this peptide fits your protocol — and at what dose.

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This information is for educational purposes only and is not medical advice. Do not use any peptide without consulting a qualified healthcare provider. BioRoot AI is a clinical decision support tool — not a medical provider.