<prompt> Magaldrate is conveed by gastric acid to ?Magnesium hydroxideMagnesium hydroxide and calcium carbonateMagnesium hydroxide and Aluminium hydroxideCalcium carbonate and aluminium hydroxide  <response>: Ans. is c i.e., Magnesium hydroxide and Aluminium hydroxide Magaldrate: Magaldrateis a common antaciddrug that is used for the treatment of duodenal and gastric ulcers, esophagitis from gastroesophageal reflux. Magaldrate is a hydroxymagnesium aluminate complex that is conveed rapidly in gastric acid to MgOH, and AlOH3, which are absorbed poorly and thus provide a sustained antacid effect. 