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 Insulin like growth factor 1 attenuates oxidative stress induced hepatocyte premature senescence in liver fibrogenesis via regulating nuclear p53progerin interaction Cell Death & Disease A Medical Review of IGF 1 LR3 Dosage, Side Effects and Safety Aspects Peptides seem to be everywhere and there are more on the way. Adherents promise these tiny chains of amino acids can help you lose weight, keep your skin clear, and slow