RETA is a synthetic peptide known as a triple-receptor agonist, designed to target the glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), and glucagon receptors. In laboratory research, it is utilized to investigate the coordinated regulation of glucose homeostasis, lipid metabolism, and energy expenditure through simultaneous multi-pathway signaling. For research use only.