What is metronidazole?

Metronidazole is a type of medicine called an antibiotic. Antibiotics kill germs called bacteria. Bacteria cause infections.

Other names

Flagyl

How should I take it?

The instructions will be on the label on the bottle. Space the doses throughout the day, try to leave even gaps between doses. Take the tablets WITH OR AFTER food. If you are not eating at the time the dose is due, take the tablets with a milky drink and a biscuit or another snack. Swallow the tablets whole with a full glass of water. Do not bite or crush the tablets.

How long do I take them for?

Usually for 7 days but sometimes longer. It is VERY IMPORTANT that you take all the tablets you have been given. Do not stop taking the tablets even if you feel better. If you do not finish all the tablets the infection may come back.

What if I forget a dose?

Take it as soon as you remember. If it is nearly time for the next dose, miss out the one you forgot. Do not double up.

Are there any side effects?

Metronidazole may make you feel sick, especially if you take it on an empty stomach. The tablets may leave a nasty taste in your mouth, this will disappear if you have a long drink after taking them. Your urine may be darker than usual, this is harmless. Some people feel a little drowsy or dizzy when taking metronidazole. If you are affected it is best not to drive or operate machines at work or at home.

Can I drink alcohol?

No! If you drink alcohol you will be extremely unwell. It is best to avoid alcohol whilst you are taking it until the day after you finish the tablets. Remember that even low alcohol drinks do contain some alcohol.

Can I take other medicines?

Yes. It is safe to take other medicines with metronidazole though you should tell the doctor if you are on any other medication.