IGF 1 LR3 does not promote growth in late gestation growth restricted fetal sheep American Journal of Physiology Endocrinology and Metabolism American Physiological Society Most people think all peptides = fat loss., Thats not even close., IGF 1 LR3 isnt about burning tissue its about building it., This is the signal that tells muscle fibers to:, Recover faster, I am injecting IGF 1 LR3 to myself. I have experienced some side effects that I want to reduce to zero. If you have injected IGF 1 or have any other experience with intramuscular 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 LR3 IGF1 Human CellSystems IGF 1 Penis Growth: What the Evidence Actually Shows