Zantac is used for treating certain conditions that cause your body to make too much stomach acid (e.g., Zollinger-Ellison syndrome). It is also used to treat ulcers of the small intestine that have not responded to other treatment. It may also be used for other conditions as determined by your doctor.
Use Zantacas directed by your doctor.
Zantac may be taken by mouth with or without food.
Swallow Zantac whole. Do not crush or chew before swallowing.
Continue to take Zantac even if you feel well. Do not miss any doses. Taking Zantac at the same time each day will help you to remember to take it.
Ask your health care provider any questions you may have about how to use Zantac.
Drug Class and Mechanism
Zantac is an H2 receptor blocker. It works by blocking the action of histamine in the stomach. This reduces the amount of acid the stomach makes. Reducing stomach acid helps to reduce heartburn, to heal irritation of the esophagus, and to heal ulcers of the stomach or intestines.
If you miss a dose of Zantac, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Store Zantac between 59 and 77 degrees F (15 and 25 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep Zantac out of the reach of children and away from pets.
Possible Side Effects
Check with your doctor if any of these most common side effects persist or become bothersome:
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.
Zantac is to be used only by the patient for whom it is prescribed. Do not share it with other people.
Zantac - contraindications, warnings and precautions
Safety and efficacy have not been established in neonates.
The plasma half-life is prolonged and plasma concentrations increase in renal impairment. The dose should be in the case of markedly impaired renal function at least halved. An appropriate dose for oral therapy is 150mg at night.
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