"What are antacids, and how do they work?
Antacids are a class of drugs used to treat conditions caused by the acid that is produced by the stomach. The stomach naturally secretes an acid called hydrochloric acid that helps to break "...
Zantac Patient Information including How Should I Take
In this Article
- What is ranitidine (Zantac)?
- What are the possible side effects of ranitidine?
- What is the most important information I should know about ranitidine?
- What should I discuss with my healthcare provider before using ranitidine?
- How should I take ranitidine?
- What happens if I miss a dose?
- What happens if I overdose?
- What should I avoid while taking ranitidine?
- What other drugs will affect ranitidine?
- Where can I get more information?
What should I discuss with my healthcare provider before using ranitidine?
Heartburn is often confused with the first symptoms of a heart attack. Seek emergency medical attention if you have chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, and a general ill feeling.
Do not use this medication if you are allergic to ranitidine.
Ask a doctor or pharmacist if it is safe for you to take this medicine if you have:
- kidney disease;
- liver disease; or
FDA pregnancy category B. This medication is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
Ranitidine passes into breast milk. Do not take ranitidine without telling your doctor if you are breast-feeding a baby.
Using ranitidine may increase your risk of developing pneumonia. Symptoms of pneumonia include chest pain, fever, feeling short of breath, and coughing up green or yellow mucus. Talk with your doctor about your specific risk of developing pneumonia.
The ranitidine effervescent tablet may contain phenylalanine. Talk to your doctor before using this form of ranitidine if you have phenylketonuria (PKU).
How should I take ranitidine?
Take exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.
Your doctor may recommend an antacid to help relieve pain. Carefully follow your doctor's directions about the type of antacid to use, and when to use it.
Do not crush, chew, or break the ranitidine effervescent tablet, and do not allow it to dissolve on your tongue. The 25-milligram effervescent tablet must be dissolved in at least 1 teaspoon of water before swallowing. The150-milligram effervescent tablet should be dissolved in 6 to 8 ounces of water.
Allow the ranitidine effervescent tablet to dissolve completely in the water, and then drink the entire mixture. If you are giving this medicine to a child, you may draw the liquid mixture into a medicine dropper and empty the dropper into the child's mouth.
Ranitidine granules should be mixed with 6 to 8 ounces of water before drinking.
Measure ranitidine liquid with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.
It may take up to 8 weeks before your ulcer heals. Keep using the medication as directed and tell your doctor if your symptoms do not improve after 6 weeks of treatment.
This medication can cause unusual results with certain medical tests. Tell any doctor who treats you that you are using ranitidine.
Store at room temperature away from moisture, heat, and light.
Additional Zantac Information
- Zantac Drug Interactions Center: ranitidine hcl oral
- Zantac Side Effects Center
- Zantac Overview including Precautions
- Zantac FDA Approved Prescribing Information including Dosage
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