IGF 1 LR3 Dosage: What to Know About Dosing, Safety, and Clinical Use L Glutathione HEALTHY ORIGINS Reduced 250 mg 60 capsules IGF LR3 1mg LIVV There's a lot of confusion around peptides and muscle. Here's how I actually think about it. Most peptides don't build muscle directly. They improve the systems that allow muscle to grow. First, IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease