Heartburn and acid reflux happens when a muscle above your stomach relaxes too much and allows stomach contents and acid to come back up into your esophagus and mouth. Olzep Capsule belongs to a group of medicines called proton pump inhibitors. It reduces the amount of acid your stomach makes and relieves the pain associated with heartburn and acid reflux. You can increase the efficiency of the medicine by making certain lifestyle changes. These include avoiding foods that trigger the symptoms, eating smaller more frequent meals, losing weight if you are overweight.