Question: how long does it take metronidazole gel to work for bv?
Answer: If symptoms improve after treatment, a follow-up visit is not necessary. Metronidazole — Metronidazole vaginal gel is one of the most effective treatments; it is applied inside the vagina at bedtime for five days. Metronidazole can also be taken in pill form, 500 mg twice daily for seven days.