Rabeprazole sodium is primarily used as a proton pump inhibitor to reduce stomach acid production. It is commonly prescribed to treat conditions like gastroesophageal reflux disease (GERD), where stomach acid flows back into the esophagus, causing heartburn and damage. It is also effective in healing and preventing ulcers in the stomach and intestines, often caused by prolonged use of nonsteroidal anti-inflammatory drugs (NSAIDs) or Helicobacter pylori infections. Additionally, it is used in the treatment of Zollinger-Ellison syndrome, a rare condition where the stomach produces excessive acid. Rabeprazole sodium is often administered in combination with antibiotics to eradicate H. pylori infections, reducing the risk of ulcer recurrence. Its fast-acting and long-lasting acid-suppressing properties make it a reliable option for managing acid-related disorders.