<prompt> Which one of the following is not an antacid?Magnesium sulfateMagaldrateMagnesium carbonateMagnesium phosphate  <response>: Clasification of antacids 1.systemic sodium carbonate,sodium citrate 2.Non systemicmagaldrate,magnesium carbonate,magnesium phosphate,magnesium hydroxide,aluminium hydroxide,calcium carbonate ESSENTIALS MEDICAL PHARMACOLOGY SIXTH EDITION KD TRIPATHI PG NO.626 