IGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is a synthetic, modified version of human IGF-1 designed for enhanced stability and prolonged activity in the body. It is a growth factor that plays a key role in cell growth, tissue repair, and muscle development.
Key Features:
- Enhanced half-life: LR3 modification extends IGF-1’s half-life from ~15–30 minutes to approximately 20–30 hours, allowing more sustained activity.
- Muscle and tissue growth: Promotes muscle cell proliferation, repair, and overall tissue regeneration.
- Fat metabolism: May assist in reducing body fat when combined with proper diet and exercise.
- Potent anabolic effects: Strongly influences protein synthesis, growth, and recovery at the cellular level.
Areas of Interest (research/clinical settings):
- Muscle repair and recovery.
- Anti-aging and tissue regeneration research.
- Studies related to metabolic health and fat loss.


