IGF-1 LR3 1 mg
Insulin-Like Growth Factor-1 Long R3 — A Plain-Language Guide
IGF-1 LR3 (Insulin-Like Growth Factor-1 Long R3) is a modified, longer-acting version of natural IGF-1. It is more potent than standard IGF-1 and remains active in the body for approximately 20–30 hours.
IGF-1 LR3 = direct muscle growth signal + improved recovery + enhanced nutrient uptake.
What it does
- Increases muscle growth (hypertrophy)
- Improves nutrient partitioning — more nutrients directed to muscle
- Enhances recovery from training
- Supports fat loss indirectly
- Promotes cell growth and repair
Why people use it
- Build lean muscle
- Break through training plateaus
- Faster recovery
- Improve body composition
Why it's different
- IGF-1 LR3 is not a growth hormone releaser — it is the downstream effect of GH
- GH → IGF-1 → muscle growth
- IGF-1 LR3 skips straight to the action
- The "LR3" modification extends half-life to ~20–30 hours
- Directly signals muscle cells to grow
- Helps shuttle nutrients into muscle tissue
Simple way to think about it
- CJC / Tesamorelin = increase GH
- IGF-1 LR3 = directly build muscle
What people notice
- Faster muscle growth
- Better pumps
- Improved recovery
- Fuller, denser muscles
- Slight fat loss over time
Side effects (real talk)
- Low blood sugar — the most important one; eat properly around dosing
- Headaches if dose is too high
- Potential water retention
Straight talk
IGF-1 LR3 is not beginner-friendly and is not a casual-use peptide. It is a powerful muscle-building compound that requires proper nutrition and dosing discipline.
Reconstitution
Reconstitution instructions
Add 200 units (2 mL) of bacteriostatic water to the 1 mg vial. Inject water slowly down the side of the vial. Gently swirl — do not shake. Store in refrigerator after mixing. 1 mg vial yield: 30 mcg/day (8 units) → ~33 days.
| Vial Size | BAC Water Added | Concentration |
|---|---|---|
| 1 mg (1000 mcg) | 200 units (2 mL) | 5 mcg per unit |
Dosing
Dosing schedule
| Item | Instruction |
|---|---|
| Dose | 30 mcg (8 units / 0.08 mL) |
| Frequency | Once daily |
| Best Timing | Pre- or post-workout |
| Injection Type | Subcutaneous or intramuscular |
Other guides
Peptide research disclaimer
This document is provided in a reference-style format for research-use-only peptide products. The preparer of this handout is not a licensed medical physician, and all information contained herein reflects personal opinion and generalized reference formatting only. Any dosing, mixing, reconstitution, or scheduling information included in this document is not medical advice, is not intended to diagnose, treat, cure, or prevent any disease, and should not be interpreted as clinical guidance.
All peptides and related compounds referenced in this document are understood to be for laboratory or research purposes only and not intended for human consumption. By using or sharing this document, the reader accepts full responsibility for any interpretation, handling, storage, reconstitution, or use of the products referenced, and the preparer disclaims liability for any misuse, unauthorized application, or consequences arising from such use.