Drug Directory Lansoprazole (Proton Pump Inhibitor) February 8, 2011February 27, 2015 Indication: Duodenal ulcer, gastric ulcer, peptic ulcer associated with helicobacter pylori, acid related dyspepsia, Zollinger-Ellison syndrome. [wp_ad_camp_4]Contraindication: Hypersensitivity to the ingredients More