Frontiers Regulation of IGF 1 signaling by microRNAs IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease MGF Peptide Therapy: Build Muscle and Recover Faster After Workouts Revolution Health & Wellness Same Origin, Completely Different Research Profiles MGF and PEG MGF both come from the same IGF 1 gene. But one lasts 7 minutes and the other lasts 3 days. Here is what that difference PEG MGF (Muscle Repair & Growth) Peptide Therapy TRTMD IGF 1 LR3 The Muscle Building Peptide Everyones Talking About , IGF 1 LR3 is one of the most powerful performance peptides used for muscle growth, recovery, and fat loss. Its a modified version