AbstractObjective: To evaluate the efficacy of Neo‐Penotran® pessaries (metronidazole 500 mg+miconazole nitrate 100 mg) in candidal, bacterial and trichomonal vaginitis and in mixed vaginal infections. Method: Ninety‐seven patients with clinical diagnosis of vaginitis entered this open, non‐comparative study. Each patient inserted one pessary twice daily for 7 days. Gynecological and microbiological assessments were carried out before, and 8–10/21–23 days after the start of treatment. Results: Vaginitis symptoms were resolved in 91% of the 74 patients evaluated, and improved in a further 7%. Microbiological cure rates were 97.3% for trichomonal, 86.6% for bacterial and 81% for candidal vaginitis. Recurrence rates were 2.7, 3.8 and 16.1%, respectively. Overall microbiological cure rate for mixed infections was 86%, with 93% for trichomonal+bacterial, and 73% for bacterial+candidal vaginitis. In two out of three cases with trichomonal+bacterial+candidal infection, the microorganisms were eradicated completely. Conclusion: Neo‐Penotran® provides immediate and effective treatment for vaginitis, irrespective of single or multiple infection, even when the diagnosis may be uncertain.