Indigestion, or dyspepsia, describes the discomfort or pain felt in the chest or upper abdomen area normally soon after eating a meal. It sometimes describes the burning sensation felt in the chest, otherwise known as heartburn.

Indigestion normally occurs when the acid found in the stomach starts to flow back up the oesophagus (this is the pipe that attaches the mouth with the stomach). Although normally occurring after eating a meal, it can happen at any time. Symptoms of indigestion include discomfort, pain or a feeling of fullness in the upper abdomen or chest area; loss of appetite; heartburn; nausea; and burping or flatulence.

Occurrences of indigestion can be triggered by smoking; excessive alcohol use; anxiety or stress; some medicines; some foods; or not eating regularly which leads to a buildup of excess acid in the stomach.

Individuals can reduce the symptoms of indigestion by doing some of the following: stopping smoking; cutting down on coffee, tea, alcohol and fatty foods; eating three hours or more before going to bed; stop overeating or eating too fast; and reducing stress.

Antacid medication is an over-the-counter treatment that is effective at relieving symptoms of indigestion. These help neutralize excess acid in the stomach and usually contain aluminum or magnesium. Others contain an ingredient known as alginate which acts by forming a barrier of sorts that floats at the top of the stomach, therefore preventing reflux.