Ranitidine is used in the treatment of gastroesophageal reflux disease (GERD) and peptic ulcer disease.
How Ranitidine Works Ranitidine is a histamine H2 receptor blocker that decreases the production of stomach acid. It alleviates acid-related indigestion and heartburn.
Common side effects of Ranitidine include headache, diarrhea, and gastrointestinal disturbances.