<prompt> Which of the following is not an H2 blocker -CimetidineOxyphenoniumRoxatidineRanitidine  <response>: Ans. is b i.e., Oxyphenonium Drugs for peptic ulcer1. Reduce gastric acid secretiona H2 antihistaminic - Cimetidine, Ranitidine, Famotidine, Roxatidine.b Proton pump inhibitors - Omeprazole, Lansoprazole, Pantoprazole, Rabeprazole, Esomeprazole.c Anticholinergics - Pirenzepine, propantheline, oxyphenonium,d Prostaglandin analogue - Misoprostol, enprostil, rioprostil.2. Neutralization of gastric acid antacidsa Systemic - Sodium bicarbonate, sodium citrate.b Non systemic - Magnesium hydroxide, Mag. trisilicate, aluminium hydroxide, Magaldrate, calcium carbonate.3. Ulcer protectives Sucralfate, colloidal bismuth subcitrate, Prostaglandin analogue.4. Anti H. pylori durgs Amoxicillin, clarithromycin, metronidazole, Tinidazole, tetracycline.Note - PG analogue have both antisecretory HC1 secretion as well as cytoprotective action. 