Gasofresh 20mg. Capsule is a medication that lowers the quantity of acid produced in your stomach. It treats acid-related stomach and intestinal illnesses such as heartburn, acid reflux, peptic ulcer disease, and Zollinger-Ellison syndrome. Heartburn and acid reflux occur when a muscle above your stomach relaxes too much, allowing stomach contents and acid to flow back into your esophagus and mouth. Gasofresh 20mg. Capsule belongs to a class of medications known as proton pump inhibitors. It decreases stomach acid production and alleviates the pain associated with heartburn and acid reflux. Making some lifestyle adjustments can help to improve the effectiveness of the drug. These include avoiding foods that cause the symptoms, eating smaller, more often meals, and decreasing weight if you are overweight.