Ipamorelin is a synthetic pentapeptide growth hormone secretagogue that selectively acts at the ghrelin receptor (GHS-R1a) on pituitary somatotrophs to stimulate growth hormone release. It is studied for its GH-releasing activity and relative receptor selectivity. Principal research areas include growth hormone secretagogue signaling, somatotrope regulation, and metabolic research models. Supplied as a lyophilized research material for laboratory research applications.