Also known as belching, burping is the process of expelling air from the digestive tract through the mouth. Burping is caused due to various reasons. Sometimes, it is caused by the release of the air swallowed while eating food or drinking fluids. This air contains a mixture of nitrogen and oxygen. People also swallow air while opening their mouths and release this in the form of burping. In the process of digestion, many bacteria in the intestines breakdown the food particles into vitamins and glucose. In this process, gases like methane and carbon dioxide are produced and are released by burping. Burping is also caused due to the consumption of soft drinks, wine, beer, and other beverages along with antacids containing effervescents. Burping might be the result of acidity, GERD, dyspepsia, and gastritis. Infants tend to accumulate gas while feeding and are relieved after burping. For people with diabetes, the usage of medications like Metformin can cause excessive burping. This is a common side effect. Also, people with diabetes who burp a lot might have to test for gastroparesis.