Experiencing heartburn is very uncomfortable. Heartburn is caused when the stomach acid from the stomach flows up and into the esophagus until appears the burning sensation in the esophagus.
Other symptoms of stomach acid problem or known as acid reflux include abdominal bloating, frequent flatulence and even seemingly unrelated symptoms such as chronic dry cough, sour or bitter in the mouth while eating, difficulty swallowing, hoarseness, and shortness of breath.
Acid reflux usually occurs because of the failure of the lower esophageal sphincter (LES) to contract after swallowing food, thus enabling stomach acid to go up and headed into the esophagus.
Failure of the contractions is caused by some situations such as obesity, lying down after eating, eating before bed, and too much eating. Excess caffeine or alcohol can also weaken the LES and cause acid reflux.