Injectable GHK Cu: Beginner's Guide to Copper Peptide Many people are being told to inject peptides like BPC 157, GHK Cu, or TB500 right over the area of pain, thinking it will deliver the peptide directly into the injured tissue. Thats simply not true. GHK Cu suppressed the activation of the p38 MAPK signaling pathway in Download Scientific Diagram For those of you that take ghk cu, why is this so bad? It's never been this bruised. But is always swollen, red, and burns like hell. I can only tolerate every other Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule