MGF Peptide Therapy: Build Muscle and Recover Faster After Workouts Revolution Health & Wellness This Peptide Is Next Level for Growth & Recovery Meet IGF LR3 the long acting insulin like growth factor that researchers can't stop talking about. From muscle growth to cellular repair , IGF 1 LR3 The Muscle Building Peptide Everyone's Talking About IGF 1 LR3 is one of the most powerful performance peptides used for muscle growth, recovery, and fat loss. It's a modified version Mechanisms of IGF 1 Mediated Regulation of Skeletal Muscle Hypertrophy and Atrophy