• Basic Info
• Clinical Info

What is this medicine?

METRONIDAZOLE (me troe NI da zole) is an antiinfective. It is used to treat certain kinds of bacterial and protozoal infections. It will not work for colds, flu, or other viral infections.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

• anemia or other blood disorders
• disease of the nervous system
• fungal or yeast infection
• if you drink alcohol containing drinks
• liver disease
• seizures
• an unusual or allergic reaction to metronidazole, or other medicines, foods, dyes, or preservatives
• pregnant or trying to get pregnant
• breast-feeding

How should I use this medicine?

Take this medicine by mouth with a full glass of water. Follow the directions on the prescription label. Do not crush or chew. Take this medicine on an empty stomach 1 hour before or 2 hours after meals or food. Take your medicine at regular intervals. Do not take your medicine more often than directed. Take all of your medicine as directed even if you think you are better. Do not skip doses or stop your medicine early.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following medications:

• alcohol or any product that contains alcohol
• amprenavir oral solution
• disulfiram
• paclitaxel injection
• ritonavir oral solution
• sertraline oral solution
• sulfamethoxazole-trimethoprim injection

This medicine may also interact with the following medications:

• cimetidine
• lithium
• phenobarbital
• phenytoin
• warfarin

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medicine?

Tell your doctor or health care professional if your symptoms do not improve or if they get worse.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.

Avoid alcoholic drinks while you are taking this medicine and for three days afterward. Alcohol may make you feel dizzy, sick, or flushed.

If you are being treated for a sexually transmitted disease, avoid sexual contact until you have finished your treatment. Your sexual partner may also need treatment.

Last Updated: October 05, 2009