This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Ulcer, Subject name: Pharmacology
[{'content': 'Magaldrate is converted by gastric acid to - \nSelect and explain. \nA. Magnesium hydroxide, B. Magnesium hydroxide and calcium carbonate, C. Magnesium hydroxide and Aluminium hydroxide, D. Calcium carbonate and aluminium hydroxide', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Magnesium hydroxide and Aluminium hydroxide Magaldrate:o Magaldrateis a common antaciddrug that is used for the treatment of duodenal and gastric ulcers, esophagitis from gastroesophageal reflux.o Magaldrate is a hydroxymagnesium aluminate complex that is converted rapidly in gastric acid to Mg(OH)2 and Al(OH)3, wrhich are absorbed poorly and thus provide a sustained antacid effect.", 'role': 'assistant'}]