Beginner setup
Vial sizes vary by vendor. Smaller bottles are usually 3 mL; larger bottles are often 10 mL. Match the label on the vial you actually bought, then use the calculator below if you need to adjust.
Vial strength 5 mg
Bottle format often 3 mL
BAC water 3 mL
Concentration 1.67 mg/mL
Overview
LL-37 is the human cathelicidin antimicrobial peptide — part of the innate immune system. It kills pathogens, modulates inflammation, and accelerates wound closure. Sensitive compound: handle gently, titrate slowly.
Preparation
Reconstitute a 5 mg vial with 3 mL of bacteriostatic water (BAC) for a ~1.67 mg/mL concentration. Roll gently to dissolve — never shake or agitate.
| Vial | BAC | Concentration |
|---|---|---|
| 5 mg | 3 mL | 1.67 mg/mL |
Protocol
| Period | Dose | Units (@ 1.67 mg/mL) | Frequency |
|---|---|---|---|
| Week 1 | 50 mcg | 3 units (0.03 mL) | 1x/day |
| Week 2 | 100 mcg | 6 units (0.06 mL) | 1x/day |
| Week 3 | 150 mcg | 9 units (0.09 mL) | 1x/day |
| Week 4 | 200 mcg | 12 units (0.12 mL) | 1x/day |
| Week 5 | 250 mcg | 15 units (0.15 mL) | 1x/day |
| Week 6 | 300 mcg | 18 units (0.18 mL) | 1x/day |
| Week 7 | 350 mcg | 21 units (0.21 mL) | 1x/day |
| Week 8 | 400 mcg | 24 units (0.24 mL) | 1x/day |
Cycle
Weekly-titrated 8-week cycles. The slow ramp matters — LL-37 is potent and over-enthusiastic starts are the classic mistake.