IGF 1 LR3 vs HGH: Which Growth Enhancer Is Better? Swolverine IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease IGF 1 LR3 Peptide Therapy Chicago Better Med Spa Switched things up and have been using my IGF 1 LR3 30 mins pre workout and have been noticing longer lasting pumps and more vascularity so far! 2 more weeks until I cycle 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 What is the effect of Insulin like Growth Factor 1 (IGF 1) Long Arg3 (LR3) on muscle growth?