Receptor Grade IGF 1 LR3: Expansive Research Potential 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, Insulin like growth factor 1 stimulates retinal cell proliferation via activation of multiple signaling pathways ScienceDirect Follow for more info on how to optimize your body. IGF 1 LR3 is one of the most misunderstood compounds in the entire space. People either treat it like a magic shortcut or Insulin like Growth Factor 1 (IGF 1) in Hair Regeneration: Mechanistic Pathways and Therapeutic Potential 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