IGF LR3 is a peptide that play a role in muscle growth, tissue repair and recovery. But like all peptide therapies, it's not one size fits all. We focus on using peptides thoughtfully and in the HGH: THE IGF 1 INSULIN AXIS IS A TRUE DR. JEKYLL AND MR. HYDE ON ONES' HEALTH PUR FORM IGF 1 LR3 Superior Peptide IGF 1 vs HGH: Mechanisms, Synergy, and Which You Should Use Effect of GH and IGF 1 administration on bone fractures healing. Download Table