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 Which route of administration gives 100% bioavailability? a) Oral b) Intramuscular c) Intravenous d) Subcutaneous Epitalon: What can this peptide do for telomere protection, aging, and longevity, and where is the evidence? Healthspan Which route of administration gives 100% bioavailability? a) Oral b) Intramuscular c) Intravenous d) Subcutaneous Bioavailability Pharmacology