Dose Ranging Study of Metronidazole Vaginal Gel in the Treatment of Bacterial Vaginosis

This is a multicenter, randomized, investigator-blinded, phase 2, dose ranging study of GW05 vaginal gel administered in 3 regimens compared to metronidazole 0.75% (QD x 5 days) for the treatment of bacterial vaginosis. Subjects will be evaluated at three timepoints (1 screening/baseline visit, post-treatment phone call and 1 test-of-cure visit). The total study duration may be up to 30 days for a subject. Study medication will be applied intravaginally once daily at bedtime according to the assigned dosing schedule using the supplied 5-gram vaginal applicators. Investigator blinding will be ensured by utilizing an independent drug dispensing coordinator at each site. Bacterial vaginosis (BV) is an infection of the vagina (birth canal) that is the result of an overgrowth of bacteria that are often normally found in the vagina. This type of vaginal infection typically does not cause irritation. The most common complaint of patients who suffer from BV is a fishy-smelling vaginal discharge. The amount of vaginal discharge may or may not be increased above a normal discharge. The bad odor may get worse after sexual intercourse or during the menstrual period. BV is also strongly associated with problems during pregnancy, such as premature (early) birth, and with an increased risk of sexually transmitted diseases. Therefore, it is important to treat the infection.