Zidoval is a brand name for a medicinal gel that contains metronidazole as its active ingredient. Metronidazole is an antibiotic that is effective against a variety of bacteria and some parasites. Zidoval gel is specifically formulated for the treatment of bacterial vaginosis (BV), a common vaginal infection caused by an imbalance of bacteria within the vagina. The gel is applied directly inside the vagina, allowing the metronidazole to act locally on the infection. It works by killing the bacteria responsible for the infection, helping to restore the natural balance of bacteria in the vagina. Zidoval is typically prescribed as a course of treatment over several days, and it is important to complete the full course as directed by a healthcare provider to ensure the infection is fully treated and to reduce the risk of it returning.