| Brand Name | Zantac |
| Generic Name | Ranitidine |
| Drug Class | H2 Receptor Antagonist (H2RA) |
| Availability | OTC |
| Manufacturer | Sanofi |
| Indications | GERD, Peptic Ulcers, Zollinger-Ellison Syndrome |
| Type | Tablet, Oral Solution, Injection |
| Doses | 150-300 mg twice daily |
| Route | Oral, IV |
| Side Effects | Headache, constipation, diarrhea, rare liver enzyme elevation |
| Interactions | Withdrawn in many markets; interacts with warfarin and others |
| Overdose | Arrhythmia, hallucinations (especially in elderly). |
| Missed Dose | Take missed dose ASAP; skip if next dose is near. |
| Contraindications | Withdrawn – safety concerns |
| Alternatives | Famotidine, Cimetidine, Nizatidine |
| Co-Pay Assistance Program | Withdrawn |
| Patient Assistance Program | Not available |
Dr. Bharat Pothuri is a Board-Certified Gastroenterologist and Hepatologist. With extensive experience in digestive health, he specializes in advanced endoscopic procedures, chronic GI disorder management, and preventive care. Dr. Pothuri is dedicated to providing expert, patient-focused insights to help improve gut health and overall well-being.
Ranitidine is used to treat heartburn, ulcers, and GERD by reducing stomach acid.
Ranitidine works by blocking histamine receptors in the stomach, which reduces acid production.
Common side effects include headache, dizziness, and stomach discomfort.
Yes, Ranitidine can be taken with or without food.
Ranitidine typically begins to relieve symptoms within an hour of ingestion.
Ranitidine is generally considered safe during pregnancy but should be used under a doctor's guidance.
If you miss a dose, take it as soon as you remember, unless it is almost time for the next dose.
Ranitidine may interact with medications like warfarin, digoxin, and certain antifungal drugs.
Consult your doctor before discontinuing Ranitidine to prevent recurrence of symptoms.
Long-term use of Ranitidine should be monitored by a healthcare professional.
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