Metronidazole for bacterial vaginosis

Bacterial vaginosis happens when the usual balance of bacteria in the vagina changes. It can cause a thin discharge, a noticeable odour, or no symptoms at all. Metronidazole targets bacteria involved in the imbalance; it does not treat every cause of vaginal discharge or itching.

A clinician may prescribe tablets or a vaginal preparation. The choice can depend on your symptoms, medical history, pregnancy status, allergies, and other medicines. Symptoms may begin to settle before the course is finished, but that does not mean the infection has fully cleared.

Take or apply metronidazole exactly as prescribed and complete the course unless the prescriber tells you to stop. Do not share it or use an old prescription. Tell the clinician about allergies, pregnancy, breastfeeding, liver problems, and all medicines or supplements you take.

Avoid vaginal douches and scented products, which can irritate the area. If you have sex during treatment, follow the advice given about comfort and any product-specific precautions. Contact the prescriber if you develop troublesome side effects or if symptoms remain after the course.

Seek medical advice for pelvic pain, fever, pain during sex, bleeding after sex or between periods, sores, or symptoms that return soon after treatment. Get urgent help for severe abdominal pain, fainting, or heavy bleeding. New or persistent vaginal discharge may require testing for another infection.

Ask which form of metronidazole you need, how to use it, what side effects to watch for, and when improvement should begin. Ask whether a partner needs assessment, whether testing is appropriate, and what to do if discharge or odour continues.