Important Treatment Info for Cimetidine

Cimetidine Dosing for GERD

The recommended dosage of cimetidine for gastroesophageal reflux disease (GERD) in adults is cimetidine 800 mg twice daily or 400 mg four times daily for 12 weeks.
 

Cimetidine Dosing for Pathological Hypersecretory Conditions

The typical dose of cimetidine that healthcare providers recommend for pathological hypersecretory conditions (such as Zollinger-Ellison syndrome) is cimetidine 300 mg four times daily. If necessary, your healthcare provider may increase your dose up to a total of cimetidine 2400 mg per day.
 

Non-Prescription Cimetidine Dosage

For adults and children 12 and over, cimetidine 200 mg can be used to prevent heartburn or indigestion when taken right before a meal (or up to 30 minutes before a meal). Over-the-counter cimetidine can also help relieve symptoms once they occur. Do not take more than two over-the-counter cimetidine tablets in a 24-hour period.
 

General Tagamet Dosage Information

Some considerations for people taking cimetidine include the following:
 
  • Ask your healthcare provider about how long you will need to take cimetidine. Some people only need to take cimetidine for a short period of time (a month or two).
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  • A liquid form of prescription cimetidine is available for people who have trouble swallowing tablets.
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  • You may take cimetidine with or without food.
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  • If you take cimetidine daily, you should take it at the same time(s) each day to maintain an even level of the drug in your blood. If you take cimetidine just once a day, it is usually best to take it at bedtime.
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  • For cimetidine to work properly, it must be taken as prescribed. Cimetidine will not work if you stop taking it. However, many people need to take cimetidine only until their ulcer or esophagitis is healed.
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  • People who have poor kidney function (including kidney failure or renal failure) need to take a lower dose of cimetidine. If you have kidney problems, ask your healthcare provider about which dose of cimetidine you should be taking.
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  • If you are unsure about anything related to cimetidine or your cimetidine dosage, please talk to your doctor, nurse, or pharmacist.
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Cimetidine (Tagamet)

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