The present invention is directed to the use of nifuratel, or aphysiologically acceptable salt thereof, to treat infectionscaused by Atopobium species. The invention is further directed to the use ofnifuratel to treat bacteriuria, urinary tract infec-tions,infections of external genitalia in both sexes, as well as bacterialvaginosis, or mixed vaginal infections in women, when oneor more species of the genus Atopobium are among the causative pathogens ofthose infections.