Injecting IGF1 LR3 directly into the muscle your training : r nattyorjuice IGF 1 LR3 Peptide Clinics IGF1 LR3 Peptide Anderson Longevity Clinic 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 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