IGF LR3 1mg Peplogix If your goal is better body composition, that means more muscle and less fat, certain peptides can help. These are not steroids and they do not replace testosterone if testosterone is low. Superior Peptide IGF 1 LR3 Muscle Growth & Recovery IGF 1 LR3 1mg Peptide: Growth Factor Research IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease Mechanisms of IGF 1 Mediated Regulation of Skeletal Muscle Hypertrophy and Atrophy