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, L Glutathione (Reduced), 500 mg, 120 Veggie Capsules Sleep & Sculpt Peptide Therapy in Chicago CJC1295 + Ipamorelin at Better Med Spa MGF Peptide Therapy: Build Muscle and Recover Faster After Workouts Revolution Health & Wellness IGF DES Amazon.com: Liposomal Glutathione 500mg Active Form L Glutathione (Reduced) for Maximum Absorption Made with Organic Whole Foods Master Antioxidant & Detoxifier Immune & Cardiovascular Support 120 count : Health & Household