![Igtrin [IGF-1 LR3 1mg] – 10 Vials – Corey Pauling](/media/2026/08/igtrin.jpg)
IGTRIN [IGF-1 LR3 100mcg] contains Long R3 IGF-1, a modified analogue of insulin-like growth factor-1 (IGF-1) designed to remain active in the body for significantly longer than natural IGF-1. Its prolonged activity provides sustained stimulation of the IGF-1 receptor and the anabolic pathways involved in muscle growth, protein synthesis, cellular development, and tissue repair. For athletes and bodybuilders, IGF-1 LR3 is particularly valued for its potential to support muscle development, recovery, and nutrient utilization during periods of intensive training.