Tagamet IV

Tagamet IV Interactions

Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.

This drug should not be used with the following medications because very serious interactions may occur:

• cisapride
• dofetilide
• epirubicin

If you are currently using any of these medications listed above, tell your doctor or pharmacist before starting cimetidine.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of:

• atazanavir
• azole antifungals (e.g., itraconazole, ketoconazole)
• carmustine
• dasatinib
• metformin
• moclobemide
• moricizine
• procainamide
• quinidine
• drugs removed from your body by certain liver enzymes (such as lidocaine, metoprolol, metronidazole, propranolol, tacrine, theophylline, warfarin, zaleplon, narcotic analgesics including codeine, tricyclic antidepressants including amitriptyline, anti-seizure drugs including carbamazepine and phenytoin, benzodiazepines including diazepam, calcium channel blockers including nifedipine)

Cigarette smoking can affect this medication. Tell your doctor if you smoke and if you stop or start smoking while using this medication.

This medication and similar H2 blockers (e.g., famotidine, nizatidine, ranitidine) are available both with and without a prescription. Do not use them at the same time.

This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

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Precautions and Side Effects