Heartburn is the burning sensation felt in the chest just beneath the sternum (breastbone). It is a discomfort that nearly seven million American experience as part of an associated condition called gastroesophageal reflux disease (GERD). Heartburn is sometimes referred to as indigestion, acid regurgitation, or sour stomach. Despite its name, heartburn is not related to problems with your heart. Instead, it is due to an abnormality keeping stomach acid out of the esophagus.
How long does heartburn last? Quick relief tips