Do not use this medication if you are allergic to metronidazole, or if you are in the first trimester of pregnancy. Tell your doctor if you are pregnant or plan to become pregnant during treatment.
Before taking metronidazole, tell your doctor if you are allergic to any drugs, or if you have:
- liver disease;
- a stomach or intestinal disease such as Crohn's disease;
- a blood cell disorder such as anemia (lack of red blood cells) or leukopenia (lack of white blood cells);
- epilepsy or other seizure disorder; or
- nerve disorders.
If you have any of these conditions, you may need a dose adjustment or special tests to safely take this medication.
Metronidazole can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Do not drink alcohol while you are taking metronidazole and for at least 3 days after you stop taking it. You may have unpleasant side effects such as fast heartbeats, warmth or redness under your skin, tingly feeling, nausea, and vomiting.
Check the labels of any medicines or food products you use to make sure they do not contain alcohol.
Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or has blood in it, call your doctor. Do not use any medicine to stop the diarrhea unless your doctor has told you to.
Seek emergency medical attention if you think you have used too much of this medicine.
Overdose symptoms may include nausea, vomiting, dizziness, loss of balance or coordination, numbness and tingling, or seizures (convulsions).
Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects:
- seizures (convulsions);
- fever, chills, body aches, sore throat, flu symptoms;
- numbness or tingling in your hands or feet;
- white patches or sores inside your mouth or on your lips;
- pain or burning when you urinate; or
- diarrhea that is watery or bloody.
Less serious side effects may include:
- nausea, stomach pain, diarrhea;
- headache, dizziness, loss of balance;
- vaginal itching or discharge;
- dry mouth or unpleasant metallic taste;
- cough, sneezing, runny or stuffy nose; or
- swollen or sore tongue.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Before taking this medication, tell your doctor if you are taking any of the following medicines:
- cimetidine (Tagamet);
- seizure medication such as phenytoin (Dilantin) or phenobarbital (Luminal, Solfoton);
- a blood thinner such as warfarin (Coumadin);
- lithium (Lithobid, Eskalith, others); or
- disulfiram (Antabuse).
This list is not a complete and there may be other drugs that can interact with metronidazole. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
Flagyl, Flagyl 375, Flagyl ER, Flagyl I.V., Flagyl I.V. RTU, Metro I.V., Metryl, Protostat, and metronidazole
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Copyright 1996-2004 Cerner Multum, Inc. Version 2.05. Revision date 8/23/04