Epithalon (Ala-Glu-Asp-Gly) is a synthetic tetrapeptide bioregulator derived from the pineal gland studied extensively in longevity and anti-aging research. Preclinical studies have examined Epithalon for its telomerase-activating properties, ability to restore and extend telomere length in aging cells, regulation of melatonin and cortisol synthesis, and normalization of neuroendocrine function in aged animal models. Long-term animal studies have reported lifespan extension in multiple species. PeptideBull provides Epithalon at verified research-grade purity. Not for human or veterinary consumption.