<prompt> Drug of choice for bacterial vaginosis: March 2011CiprofloxacinDoxycyclineTeracyclineMetronidazole  <response>: Ans. D: Metronidazole The 7-day course of metronidazole 500 mg twice daily is effective in 85 of courses of bacterial gardnerella vaginosis, whereas a single dose of 2 gm cures only 45. 