LL-37 Peptide Guide: Dosage, Reconstitution & Immune Support Breakdown

LL-37

LL-37 is an antimicrobial peptide studied for its role in immune defense, wound healing, inflammation control, and microbiome regulation. It is part of the body’s innate immune system and plays a key role in protecting against bacterial, viral, and fungal threats.

How It Works

Antimicrobial Activity ↑ → Immune Modulation ↑ → Tissue Repair ↑ → Inflammation Regulation

LL-37 works by directly disrupting microbial membranes while also signaling immune responses. It plays a dual role in both defending against pathogens and promoting tissue repair.

LL-37 Protocol

Standard / Gradual Approach

5 mg vial reconstituted with 3.0 mL bacteriostatic water

1 unit = 16.7 mcg

Days 1–3

Dose50 mcg

Units3 units

Volume0.03 mL

Days 4–10

Dose100 mcg

Units6 units

Volume0.06 mL

Days 11–21

Dose150 mcg

Units9 units

Volume0.09 mL

Frequency: Once daily
Timing: Morning or early day
Route: Subcutaneous (most common)
Cycle Length: 2–4 weeks

Real-World vs Clinical Use

Real-World Use

Typical Range50–150 mcg daily

GoalImmune + skin + recovery support

Clinical / Research Context

FocusAntimicrobial + immune signaling

RealityCan be highly dose-sensitive

When & Where to Inject

• Subcutaneous injection
• Common sites: abdomen or thigh
• Some use near affected area (research-based practice)
• Rotate injection sites regularly

Reconstitution & Dosing

Vial 5 mg

Water 3.0 mL

Concentration 1.67 mg/mL

Conversion 1 unit = 16.7 mcg

Dose Reference

3 units = 50 mcg

6 units = 100 mcg

9 units = 150 mcg

12 units = 200 mcg

Reconstitution Steps

Draw 3.0 mL bacteriostatic water

Inject slowly down the vial wall

Gently swirl (do not shake)

Allow full dissolution

Storage

Refrigerate at 2–8°C after mixing

Use Window

Use within ~3–4 weeks

Monitoring During Use

• Immune response and symptoms
• Skin or wound healing progress
• Inflammation levels
• Injection site tolerance

LL-37 Guide →

Benefits

• Supports antimicrobial defense
• May aid wound healing
• Supports immune modulation
• May help regulate inflammation

Potential Side Effects

• Injection site irritation
• Temporary inflammation increase
• Possible fatigue or immune response shifts
• Limited long-term human data

Important Notes

• LL-37 is highly active in immune signaling
• Start low and increase gradually
• Short cycles are most commonly discussed
• Response varies significantly between individuals

Important Disclaimer

LL-37 is an investigational peptide and is not FDA-approved. This content is for educational and research purposes only.

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