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CIMETIDINE (sye MET i deen) treats heartburn, stomach ulcers, reflux disease, or other conditions caused by too much stomach acid. It works by reducing the amount of acid in the stomach.
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
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Take this medication by mouth. Take it as directed on the prescription label at the same time every day. If you only take this medication once a day, take it at bedtime. Do not take your medication more often than directed.
Talk to your care team about the use of this medication in children. Special care may be needed.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
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Do not take this medication with any of the following:
-Cisapride
-Dofetilide
-Pimozide
This medication may also interact with the following:
-Caffeine
-Carbamazepine
-Carmustine
-Delavirdine
-Estrogen or progestin hormones
-Itraconazole
-Ketoconazole
-Medications for irregular heartbeat
-Phenytoin
-Theophylline
-Warfarin
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
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Tell your care team if your pain does not start to get better or gets worse. You may need to take this medication for several days before your symptoms get better. Finish the full course of tablets prescribed even if you feel better.
Do not take with aspirin, ibuprofen, or other antiinflammatory medications unless directed to do so by your care team. These can make your condition worse.
Do not smoke cigarettes or drink alcohol. These increase irritation in your stomach and can increase the time it will take for your ulcer to heal.
If you get black, tarry stools or vomit up what looks like coffee grounds, call your care team right away. You may have a bleeding ulcer.
This medication may cause a decrease in vitamin B12. Make sure that you get enough vitamin B12 while you are taking this medication. Discuss the foods you eat and the vitamins you take with your care team.
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If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.
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Side effects that you should report to your care team as soon as possible:
-Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
-Confusion
-Hallucinations
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
-Constipation
-Diarrhea
-Dizziness
-Headache
-Unexpected breast tissue growth
This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
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Keep out of the reach of children.
Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Protect from light. Keep container tightly closed. Throw away any unused medication after the expiration date.
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
DISCLAIMER: This drug information content is provided for informational purposes only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Patients should always consult their physician with any questions regarding a medical condition and to obtain medical advice and treatment. Drug information is sourced from GSDD (Gold Standard Drug Database ) provided by Elsevier.
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