Which of the following does not change pH of stomach: September 2011

Ans. A: Sucralfate Sucralfate has very poor acid neutralizing capacity and it has no antisecretory propey Sucralfate It is a cytoprotective agent, primarily indicated for the treatment of active duodenal ulcers. Sucralfate is also used for the treatment of gastroesophageal reflux disease (GERD) and stress ulcers. Unlike the other classes of medications used for treatment of peptic ulcers, sucralfate is a sucrose sulfate-aluminium complex that binds to the mucosa, thus creating a physical barrier that impairs diffusion of hydrochloric acid in the gastrointestinal tract and prevents degradation of mucus by acid. It also stimulates bicarbonate output and acts like an acid buffer with cytoprotective propeies Sucralfate is a locally acting substance that in an acidic environment (pH < 4) reacts with hydrochloric acid in the stomach to form a cross-linking, viscous, paste-like material capable of acting as an acid buffer for as long as 6 to 8 hours after a single dose. It also attaches to proteins on the surface of ulcers, such as albumin and fibrinogen, to form stable insoluble complexes. These complexes serve as protective barriers at the ulcer surface, preventing fuher damage from acid, pepsin, and bile. In addition, it prevents back diffusion of hydrogen ions, and adsorbs both pepsin and bile acids.