Metronidazole (By injection)
Treats bacterial infections and prevents infections during surgery.
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When This Medicine Should Not Be Used
How to Use This Medicine
- Your doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.
- A nurse or other health provider will give you this medicine.
- Your doctor might give you a few doses of this medicine until your condition improves, and then switch you to an oral medicine that works the same way. If you have any concerns about this, talk to your doctor.
Drugs and Foods to Avoid
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
- Do not use this medicine if you have taken disulfiram within the last 2 weeks. Do not drink alcohol or use medicine that contains alcohol or propylene glycol while using this medicine and for at least 3 days after you have finished metronidazole treatment.
- Some foods and medicines can affect how metronidazole works. Tell your doctor if you are using busulfan, cimetidine, lithium, phenobarbital, phenytoin, a steroid (such as hydrocortisone, methylprednisolone, prednisone), or warfarin or another blood thinner.
Warnings While Using This Medicine
- Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, blood or bone marrow problems, oral thrush, a yeast infection, fluid problems (edema), or a history of seizures.
- This medicine may cause the following problems:
- Brain or nervous system problems, including seizures, meningitis, or vision problems
- Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
- Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.
Possible Side Effects While Using This Medicine
Call your doctor right away if you notice any of these side effects:
- Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing]
- Confusion, drowsiness, fever, headache, loss of appetite, nausea or vomiting, stiff neck or back
- Dizziness, problems with muscle control, clumsiness, shakiness, trouble talking
- Fever, chills, cough, sore throat, and body aches
- Numbness, tingling, or burning pain in your hands, arms, legs, or feet
If you notice these less serious side effects, talk with your doctor:
- Unusual or unpleasant taste in your mouth
- Pain, itching, burning, swelling, or a lump under your skin where the needle is placed
If you notice other side effects that you think are caused by this medicine, tell your doctor
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088
- Last reviewed on 10/4/2017
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