Aciloc RD 20 New Tablet belongs to a group of medicines called gastrointestinal agents used to treat heartburn, indigestion, epigastric pain, gastro-oesophageal reflux disease (GERD), peptic ulcers and Zollinger-Ellison syndrome. Gastroesophageal reflux disease (GERD) occurs when stomach acid frequently flows back into the food pipe (oesophagus).