⚠️Educational purposes only. Not medical advice. Consult a licensed provider before use. Many peptides are research-grade compounds not FDA-approved. Verify legal status in your jurisdiction.
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IGF-1 LR3
Insulin-like Growth Factor-1 Long R3
ModerateResearch Grade
A modified IGF-1 analog with a longer half-life that drives rapid muscle hypertrophy and nutrient partitioning.
Mechanism of action
IGF-1 receptor agonism, satellite cell activation, protein synthesis, nutrient shuttling to muscle
Primary benefits
- ✓Rapid muscle size increase
- ✓Strength gains
- ✓Enhanced nutrient partitioning
- ✓Recovery acceleration
- ✓Hyperplasia potential
Dosing
Beginner
20-40 mcg/day
Intermediate
40-80 mcg/day
Advanced
80-100 mcg/day
Frequency: Daily
Timing: Post-workout
Route: Subcutaneous injection, Intramuscular injection
Cycling protocol
Duration
4-6 weeks maximum
Pattern
Daily
Break after
6-8 weeks minimum
Important warnings
- ⚠️Risk of hypoglycemia — use with food nearby
- ⚠️Short cycles only — receptor desensitization
- ⚠️Potential for tumor growth in pre-existing conditions
- ⚠️Advanced users only