Metronidazole is an antibiotic that is used to treat a wide variety of infections. It works by stopping the growth of certain bacteria and parasites. This antibiotic treats only certain bacterial and parasitic infections. It will not work for viral infections (such as common cold, flu).
Metronidazole is an antibiotic that fights bacteria. Metronidazole is used to treat bacterial infections of the vagina, stomach or intestines, liver, skin, joints, brain, heart, and respiratory tract.
Metrogel (topical metronidazole) is also used to treat rosacea, a skin condition. Vaginal metronidazole gel is also used to treat bacterial infections of the vagina.