Omez-DSR Capsule is used to treat heartburn, indigestion, epigastric pain, gastro-oesophageal reflux disease (GERD), peptic ulcers and Zollinger-Ellison syndrome. It contains Omeprazole and Domperidone, which work by reducing acid production and increasing the contractions of the stomach muscles. In some cases, you may experience certain common side effects, such as dry mouth, stomach pain, diarrhoea, headache, and flatulence. Before taking this medicine, you should tell your doctor if you are allergic to any of its components or if you are pregnant/breastfeeding, and about all the medications you are taking and pre-existing medical conditions.