GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy GHK Cu Troche Strive Pharmacy What is Sermorelin and why does it stand out?, Sermorelin is one of the more clinically established compounds in this category. Its a GHRH analog, meaning it was designed to work with the bodys own GHK Cu: The Peptide That Supports Healthy Aging GHK Cu (copper peptide) is naturally occurring in the body and plays a role in supporting skin health, collagen production, and tissue repair. As Sermorelin for Women beyondMD