Gzel-40 Injection is used for treatment of erosive esophagitis caused due to GERD and for Zollinger-Ellison syndrome. It has been formulated using pantoprazole as active compound having molecular formula C16H15F2N3O4S and molar mass of 383.371 g/mol. This medicine works by covalently binding to H+/K+ ATP pump in order to inhibit final step of gastric acid secretion. Upon administration, Gzel-40 Injection gets metabolized by CYP2C19 & CYP3A4 in liver. It is administered by intravenous route and has bioavailability of 77% with elimination half life of 1-2 hours. This medicine belongs to class of proton pump inhibitors.