Metronidazole
Prescription status is set country by country — the label where you live is the one that applies.
Beta: the medication section is still being tested, and its data may contain errors. Do not rely on it for a decision about your own treatment.
Metronidazole is a nitroimidazole antibiotic active against anaerobic bacteria and several protozoa. Inside these organisms it is chemically reduced into reactive intermediates that break their DNA, which kills the cell. It is used for anaerobic bacterial infections and forms part of the combination regimens used to clear the bacterial cause of stomach and duodenal ulcers.
A usual adult range, not a national label — the dose and the timing differ by country and by product.
Approved uses differ by country — some of these may be off-label or unapproved where you live.
It is taken with food, which softens the nausea and stomach upset it often causes. A persistent metallic taste is common and harmless, and it fades after the course ends. Alcohol is avoided during the course and for a short period afterwards because the combination can cause flushing, vomiting and a pounding heartbeat. It increases the effect of the anticoagulant warfarin, so bleeding risk rises. White cell counts and ALT may be checked, since the drug can lower white cells and irritate the liver.
See a doctor for numbness, tingling or burning in the hands or feet, for unusual bruising, sore throat or fever, or for yellowing of the skin or eyes. Unusual bleeding while also on warfarin, or a severe reaction after alcohol, also warrants prompt medical attention.
Reference information, not medical advice. Discuss any change with your doctor.