Fast 20 Tablet is an antacid medication. It will reduce the amount of acid produced in your stomach and can be used for treating acid-related diseases of the stomach and intestine such as acid reflux problems and for some other stomach conditions associated with excessive production of acid.
Acidocid or heartburn syrup is an anti-acidic syrup that calms the stomach and reduces acidity. It is lower in calories than other acid-control or antacids like Maalox or Mylanta because it only affects bacteria in the stomach.