Zantac (Ranitidine)


Zantac is a histamine H2-receptor antagonist that reduces the production of stomach acids.

Zantac 300 mg (Normal Dosage)

60 pills
$0.66 per pill
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90 pills
$0.50 per pill
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Zantac 150 mg (Low Dosage)

90 pills
$0.43 per pill
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Drug Uses

Zantac is used to cure gastrointestinal conditions like gastro esophageal reflux disease, Zollinger-Ellison syndrome and systemic mastocytosis, erosive esophagitis and is also used in the short-term treatment (4 to 8 weeks) of active ulcers.


Ensure that you take Zantac exactly as prescribed by your doctor and follow any specific dietary instructions given. Your doctor may prescribe an antacid along with it. Ensure that you space out both medicines by at least an hour.

Missed Dose

You should try and take your doses on time taking care not to miss any. But if you do miss a dose, then skip it and continue with your regular dose. But do not take a double dose.


Store it at room temperature in a tight container protecting it from light and moisture.


An abnormal manner of walking, low blood pressure, fast heartbeat, restlessness and vomiting are some of the symptoms of an overdose. Seek medical attention immediately if you suspect an overdose.

More Information

Use with caution if you have kidney or liver disease. The drug may cause light-headedness, dizziness, and faintness in some people. Do not consume alcohol along with the drug. Do not drive or handle heavy machinery until you know how to react to the drug.
Safety Information

Possible Side Effects

Check with your doctor if any of these most common side effects persist or become bothersome:

constipation; diarrhea; headache; nausea; stomach upset.
Seek medical attention right away if any of these severe side effects occur:

severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); confusion; dark urine; fast, slow, or irregular heartbeat; fever, chills, or sore throat; hallucinations; severe or persistent headache or stomach pain; unusual bruising or bleeding; yellowing of the eyes or skin.
More Information

Zantac is to be used only by the patient for whom it is prescribed. Do not share it with other people.
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