GHK Cu + Epitalon (Epithalon) When it comes to advanced regenerative and longevity medicine, peptides are powerful toolsand two of the most studied are GHK Cu and Epitalon. GHK Cu (Copper Peptide) Epitalon: What can this peptide do for telomere protection, aging, and longevity, and where is the evidence? Healthspan PDF) Overview of EpitalonHighly Bioactive Pineal Tetrapeptide with Promising Properties Drug Absorption and Bioavailability Basicmedical Key Epitalon: What can this peptide do for telomere protection, aging, and longevity, and where is the evidence? Healthspan