Definition

The hydrochloride salt form of ulimorelin, a macrocyclic ghrelin peptidomimetic, with potential gastrointestinal (GI) prokinetic activity. Upon intravenous administration, ulimorelin binds to the ghrelin receptor in the GI tract and may stimulate GI motility. Ghrelin is a natural ligand for growth hormone secretagogue receptors and is normally localized in the proximal GI tract. The ghrelin receptor signaling pathway mediates multiple GI functions, including motility and gastric emptying.