Clinically there is no metronidazole tablets drug, its may be metronidazole tablets, the role of amoeba, trichomonas, tetanus clostridium, anaerobic bacteria have a very good killing effect. Metronidazole is a nitroimidazole antibiotic, and its pharmacological effect is that the nitro in the anaerobic environment of the cell is reduced to amino, thus inhibiting the synthesis of the pathogen DNA, and play an antipathogenic role. It is generally used in anti-infective treatment of amoeba, trichomonas, clostridium tetani, and anaerobic bacteria. Metronidazole application is recommended under the guidance of a doctor, long-term use may be by gastrointestinal reactions, allergic reactions, peripheral neuritis and other side effects, during the period of use and discontinuation of 1 week, should be prohibited to drink alcohol or beverages containing alcohol in order to avoid the occurrence of disulfiram reaction.