Livagen is a synthetic tetrapeptide (Lys-Glu-Asp-Ala) that belongs to the family of peptide bioregulators. It is primarily researched for its potential anti-aging and gene-regulating effects, promoting chromatin decondensation to activate gene expression. It may support liver function and cellular repair. Unlike growth hormone peptides, Livagen is not a secretagogue but rather a regulatory peptide. It is typically used in research settings, not for human consumption.