The most common symptoms include heartburn, burning abdominal pain, and regurgitation, and they are often related to excess acidity in the GI tract.

hyperacidity — a condition in which the level of gastric acid/hydrochloric acid is excessive, causing GI discomfort. hydrochloric acid (HCl) — a strong acid that is a component of gastric juices. neutropenia — abnormally few neutrophils in the blood, leading to possible infection; an undesirable side effect of some cancer treatments. peptic ulcer disease (PUD) — open sores that develop on the inside lining of the stomach and the upper portion of the small intestine from excessive acid or corrosive chemicals/medications.