Why does an antacid make you feel better?

An antacid alleviates discomfort by neutralizing stomach acid, which can help relieve symptoms of heartburn, indigestion, and acid reflux. By increasing the pH level in the stomach, antacids reduce irritation of the stomach lining and esophagus caused by excess acid. This provides quick relief from the burning sensation and discomfort associated with acidic conditions in the digestive tract.