Explanation, Benefits, and Dosing for IGF LR3 Wittmer Rejuvenation Clinic IGF 1 Facilitates Cartilage Reconstruction by Regulating PI3K AKT, MAP JIR Dove Medical Press IGF 1 LR3 tells your muscle cells to grow, repair, and absorb nutrients better. It works directly at the muscle level to help you build lean muscle and recover faster.What it is IGF 1 Effects of IGF1 isoforms on muscle growth and sarcopenia Ascenzi 2019 Aging Cell Wiley Online Library Discover IGF 1 (Insulin like Growth Factor 1), a key player in muscle development and overall growth! This essential peptide stimulates protein synthesis, helping to build lean muscle mass and enhance recovery after workouts. IGF 1 LR3 vs GH Peptides The Battle Between Performance & Risk