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 1 mg
Bottle format often 3 mL
BAC water 3 mL
Concentration 0.33 mg/mL
Overview
IGF-1 LR3 is a modified IGF-1 with a much longer half-life than native IGF-1. It’s the direct end-product of the GH pathway, so it’s used when you want growth signaling without the GH pulse machinery.
Preparation
Reconstitute a 1 mg vial with 3 mL of bacteriostatic water (BAC) for a ~0.333 mg/mL concentration (333 mcg/mL). Use the full 3 mL — the dilution keeps tiny doses measurable.
| Vial | BAC | Concentration |
|---|---|---|
| 1 mg | 3 mL | 0.33 mg/mL |
Protocol
| Period | Dose | Units (@ 0.33 mg/mL) | Frequency |
|---|---|---|---|
| Weeks 1–2 | 20 mcg (0.02 mg) | 6 units (0.06 mL) | 1x/day |
| Weeks 3–4 | 40 mcg (0.04 mg) | 12 units (0.12 mL) | 1x/day |
| Weeks 5–8 | 50 mcg (0.05 mg) | 15 units (0.15 mL) | 1x/day |
Cycle
8 weeks is standard; 12-week runs exist but returns fade past week 6–8. Dose with food (morning or post-workout) because of its insulin-like effect on blood glucose.