MARLOX PLUS 480/20 is a chewable tablet containing 480 mg of magaldrate and 20 mg of simethicone, used to relieve symptoms of indigestion, heartburn, acid indigestion, sour stomach, gastroesophageal reflux, and hiatal hernia. 1 It also helps manage hyperacidity associated with peptic ulcers, gastritis, and esophagitis, and can alleviate flatulence, abdominal distension, and windy colic by neutralizing stomach acid and facilitating the expulsion of gas.