To my knowledge, GHK Cu isn't on WADA's banned list BPC 157 is banned. But here's the twist: Some athletes are using modified versions like N acetyl BPC 157 When you change the structure (like adding Peptides GymHub Is GHK Cu Legal? FDA Approved Peptides Neurogan Health GHK Cu longevity peptide. Your body makes it. Peaks at 20. Down 60% by 60. 50 years of research says it: Modulates 4,000+ genes toward younger expression Regenerates bone and connective tissue