Metronidazole tablets are inserted into the vagina and are usually used to treat bacterial vaginitis or trichomoniasis. There is usually no need to wash inside the vagina on the second day of use. Metronidazole tablets are often used to treat bacterial vaginitis or trichomonas vaginitis. When metronidazole is inserted into the vagina, the vast majority of it will be absorbed by the vaginal mucosa, and even if a small portion of the medication is not absorbed, it will be expelled from the body on its own. So on the second day of drug use, there is no need to discharge the drug by douching. During the use of metronidazole tablets, it is necessary to pay attention to the prohibition of alcohol consumption, so as not to cause adverse reactions. The use of metronidazole tablets should be prohibited in patients with active central nervous system diseases. In addition, the use of metronidazole tablets inserted into the vagina may also lead to local itching and other adverse reactions, need to be used under the guidance of a professional doctor, to avoid blind self-use. If vaginitis occurs, you need to consult a doctor in time, under the guidance of the doctor for standardized treatment.