Physicians prescribe metronidazole 400 mg tablets to treat and prevent certain kinds of infections, according to the National Health Service. These include mouth, bone, intestine and genital tract infections. Metronidazole also prevents infections after surgery.
Metronidazole is an antimicrobial agent that treats various types of infections caused by anaerobic bacteria and microorganisms known as protozoa, states the Patient.co.uk. These organisms usually cause infections in the gums, abdomen and pelvic cavity. They do not require oxygen to grow and multiply. Another use of metronidazole is preventing infection before gynecological surgery and surgery on the intestines. Furthermore, it eliminates Helicobacter pylori, which is a bacterial infection associated with stomach ulcers.
The Patient.co.uk says that metronidazole is available in oral liquid, tablet, suppository and injection form. It is also available as a skin gel and cream. Some side effects of the medicine include lack of appetite, furred tongue, sore mouth, changes in the way things taste and a feeling of being sick. It is important to avoid drinking alcohol while taking this medication and for 48 hours after completing the course of treatment as alcohol tends to make a person very sick and also causes unpleasant effects, such as headaches, hot flushes and palpitations.