Peptide Reference
IGF-1 LR3
Insulin-Like Growth Factor-1 Long R3
A synthetic analog of IGF-1 with extended half-life and enhanced potency. Promotes muscle growth, recovery, and tissue repair.
Status
research
Category
muscle
Typical cost
$80-200/vial (1mg)
Mechanism
Binds to IGF-1 receptors with higher affinity and longer duration than natural IGF-1. Stimulates muscle cell proliferation (hyperplasia) and growth (hypertrophy). Enhances nutrient uptake into muscle cells.
Potential benefits
- Significant muscle growth
- Enhanced recovery
- Improved nutrient partitioning
- Reduced body fat
- Better pumps
Reported side effects
- Hypoglycemia
- Water retention
- Joint pain
- Organ growth concerns
- Cancer risk (theoretical)
- HGH gut
Common dosing references
subcutaneous
20-100mcg · Daily or post-workout
4-6 weeks
Research notes
IGF-1 LR3 muscle effects
2005
Demonstrated potent anabolic effects in muscle tissue in animal studies
Regulatory and sourcing notes
Research chemical only. Not FDA-approved. Banned by most sports organizations.
Research peptide. Quality varies. High risk profile. Often faked or underdosed.
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