Metronidazole tablets have antibacterial properties. Metronidazole tablets are inserted vaginally mainly to treat bacterial vaginitis and trichomoniasis and have the effect of killing bacteria. When using metronidazole to treat vaginitis, it is recommended to choose metronidazole suppositories or to grind metronidazole into a powder and sprinkle it into the vagina. Direct treatment with metronidazole tablets inserted in the vagina is less effective because metronidazole tablets cannot be melted and can only work locally in the vagina, which is not ideal for the overall treatment of vaginitis. Grinding metronidazole tablets into powder for use requires a health care professional to administer the medication to the vaginal area with the use of a vaginal speculum is relatively cumbersome. If bacterial or trichomoniasis is diagnosed, it is recommended that metronidazole suppositories are easier to use for treatment. It is recommended to cleanse the vulva before use, then lie flat with a fingertip and insert the metronidazole suppository into the posterior vaginal fornix.