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) Drug Absorption and Bioavailability Basicmedical Key Drug Absorption and Bioavailability Basicmedical Key Epitalon: What can this peptide do for telomere protection, aging, and longevity, and where is the evidence? Healthspan What is Epitalon? Epitalon is a synthetic peptide made of 4 amino acids. It's based on a naturally occurring compound from the pineal gland (your body's master clock for sleep and