Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.
Alcohol: A severe set of side effects including nausea, vomiting, and rapid heartbeat may occur if you drink alcohol while taking metronidazole. If you are taking this medication, wait until at least one day after finishing metronidazole treatment before drinking alcohol.
Blood cell counts: This medication may cause low white blood cell counts, which can mean your immune system is weak. If you develop a fever, talk to your doctor as soon as possible. Your doctor may also perform blood tests regularly to monitor your blood cell counts if you are taking this medication for a long period of time.
Confusion/dizziness: This medication may cause confusion or dizziness. Avoid driving or other tasks requiring alertness if the medication affects you in this way.
Diarrhea: If diarrhea occurs while taking metronidazole,contact your doctor.
Liver disease:. If you have liver problems, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed. Your doctor may want to test your liver function regularly with blood tests while you are taking this medication.
Neurological side effects: Stop treatment with metronidazole and see your doctor if muscle incoordination, seizures, or numbness or tingling in the hands or feet occur.
Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. If you become pregnant while taking this medication, contact your doctor immediately.
Breast-feeding: Metronidazole passes into breast milk. It should not be taken by women who are breast-feeding.
Children: The safety and effectiveness of using this medication have not been established for children.