IGF 1 LR3 tells your muscle cells to grow, repair, and absorb nutrients better. It works directly at the muscle level to help you build lean muscle and recover faster.What it is IGF 1 Recombinant expression of IGF 1 and LR3 IGF 1 fused with xylanase in Pichia pastoris Applied Microbiology and Biotechnology Springer Nature Link IGF 1 LR3 1mg Peptide: Growth Factor Research IGF1 LR3 Peptide Anderson Longevity Clinic IGF 1 LR3: 1 mg Supernova Peptides