Applications:

• Used to treat gastroesophageal reflux disease (GERD), peptic ulcers, and conditions where the stomach produces too much acid (like Zollinger-Ellison syndrome).
• Reduces stomach acid production, helping to heal ulcers and manage heartburn or acid reflux.
• Can be used for the prevention and treatment of ulcers and conditions like indigestion.

Side Effects:

• Common side effects include headache, dizziness, constipation, or diarrhea.
• Rare but serious side effects may include liver problems, irregular heartbeats, and severe allergic reactions.
• Long-term use can occasionally lead to vitamin B12 deficiency.

Ranitidine is effective in controlling excess stomach acid but was withdrawn from many markets (including the U.S.) in 2020 due to concerns over a potential carcinogenic impurity. For those still using it, monitoring for side effects is important, especially if taken for prolonged periods.