AdvancedResearch Grade
IGF-1 LR3
Muscle growth & fat loss
IGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is a modified analogue of IGF-1 with a significantly extended half-life. It plays a pivotal role in muscle hypertrophy, fat metabolism, and cellular regeneration, making it one of the most studied anabolic peptides.
- ✓Promotes skeletal muscle hypertrophy
- ✓Enhances fat oxidation & body composition
- ✓Extended half-life vs standard IGF-1
- ✓Supports cellular repair & regeneration
- ✓≥99% purity — HPLC verified
Mechanism of Action
IGF-1 LR3 is a recombinant analogue of IGF-1 with an arginine substitution at position 3 and an extended N-terminal sequence. These modifications reduce IGF-binding protein affinity, extending its half-life from minutes to approximately 20–30 hours. It activates the PI3K/Akt and MAPK pathways, promoting protein synthesis and satellite cell proliferation.
For research and educational purposes only. This information is derived from published preclinical and clinical literature and does not constitute medical advice.