Peptide
IGF-1 LR3
Long R3 Insulin-like Growth Factor-1
Research ChemicalAnimal StudiesInjection (IM or SubQ)
Half-life
~20-30 hours
Common dose
20-100mcg post-workout
How it works
Modified form of IGF-1 with extended half-life. Binds IGF-1 receptors in muscle tissue promoting protein synthesis, satellite cell activation, and hyperplasia.
Commonly used for
Muscle massRecoveryFat lossPerformance
Potential benefits
- Promotes muscle hyperplasia — actual new muscle cells
- Long half-life compared to regular IGF-1
- Significant fat loss concurrent with muscle gain
- Accelerates recovery between sessions
- Effects synergistic with GH or GHRP use
Risks and downsides
- Hypoglycemia risk — must eat carbs before/after injection
- Organ growth concern with long-term use
- Very expensive
- Degrades rapidly — requires careful handling
- Advanced compound — not suitable for beginners
Heads up: This is for educational purposes only and is not medical advice. Many compounds here are not FDA approved for human use. Please talk to a doctor before starting anything.
Risk level
Evidence
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