Lansoprazol HEXAL (lansoprazole) is a proton pump inhibitor that inhibits gastric acid secretion and is used for treatment of duodenal and gastric ulcer, reflux oesophagitis, gastro-oesophageal reflux disease, treatment and prophylaxis of NSAID-associated gastric and duodenal ulcers, Zollinger-Ellison syndrome, and in combination with appropriate antibacterial therapeutic regimens for the eradication of Helicobacter pylori and prevention of relapse of peptic ulcers in patients with H. pylori associated ulcers.