Peptide Therapy for Anti Aging and What the Science Actually Supports PDF) Regenerative and Protective Actions of the GHK Cu Peptide in the Light of the New Gene Data NL GHK Cu (TETRAPEPTIDE + CU) Synthagen Synthagen PL Lets talk about GHK Cu beyond the marketing., Copper peptides are often positioned as anti inflammatory and universally regenerative., And in many patients, they are., But biology is not linear.,