A Medical Review of IGF 1 LR3 Dosage, Side Effects and Safety Aspects IGF 1 LR3 PRAMAH THE HAVEN IGF 1 LR3 Injection Benefits And How It Works The HCG Institute Theres a lot of confusion around peptides and muscle., Heres how I actually think about it., Most peptides dont build muscle directly., They improve the systems that allow muscle to grow., First, Recombinant Human LR3 IGF I IGF 1 GMP Protein, CF 8335D GMP: R&D Systems