Collectively, these peptides are being sold under the rubric of research chemicals to bypass FDA review
What makes injectable GHK-Cu particularly interesting is that it operates at extremely low concentrations
The composition is two ingredients: The product has a pH range of 4.5 to 7.0
The stack targets the GH axis (growth and body composition), melanocortin system (pigmentation), copper peptide biology (collagen and ECM remodeling), mitochondrial bioenergetics (NAD+ and sirtuin activation), metabolic triple-agonist signaling (fat oxidation and appetite), IGF-mediated anabolic pathways (lean tissue and repair), and androgenic/anabolic drive (protein synthesis and nitrogen retention)
Gastroenterology : For a functional approach to healing the gut lining
Journal of Medicinal Chemistry, 64(17), 1118311194