Metronidazole tablets are antibiotics, mainly used for the treatment of anaerobic bacterial infections. They can be used for the treatment or prevention of local and systemic infections, and have a strong killing effect on trichomonas and amoebas, and are used clinically for the treatment of trichomonas vaginalis. Metronidazole has certain side effects, mainly gastrointestinal reactions, such as nausea and vomiting, which usually do not affect the subsequent treatment. If the side effects are relatively severe, the drug should be increased or decreased under the guidance of a doctor. The side effects will go away after stopping the medication and there is no need to worry about them. The treatment of trichomoniasis requires the full dosage of medication to kill the trichomonas.