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Am J Obstet Gynecol. 2006 May;194(5):1283-9. Epub 2006 Apr 21.

Suppressive antibacterial therapy with 0.75% metronidazole vaginal gel to prevent recurrent bacterial vaginosis.

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  • 1Department of Medicine, Wayne State University School of Medicine, Detroit, MI, USA.

Abstract

OBJECTIVE:

Efficacy study of suppressive vaginal metronidazole in reducing recurrent symptomatic episodes of bacterial vaginosis.

STUDY DESIGN:

Multicenter prospective study with initial 10-day open-label metronidazole gel in which asymptomatic responders randomly assigned to receive twice weekly metronidazole vaginal gel or placebo for 16 weeks and off therapy for 12 weeks.

RESULTS:

Of 157 eligible women with recurrent bacterial vaginosis, 112 of 127 returning evaluable women (88.2%) responded clinically and were randomly assigned. During suppressive therapy, recurrent bacterial vaginosis occurred in 13 women (25.5%) receiving metronidazole and 26 (59.1%) receiving placebo (MITT analysis, relative risk [RR] 0.43, CI = 0.25-0.73, P = .001). During the entire 28-week follow-up, recurrence occurred in 26 (51.0%) on treatment compared with 33 (75%) on placebo (RR 0.68, CI = 0.49-0.93, P = .02). Probability for remaining cured was 70% for metronidazole compared with 39% on placebo, which declined to 34% and 18%, respectively, by 28 weeks follow-up. Adverse effects were uncommon; however, secondary vaginal candidiasis occurred significantly more often in metronidazole-treated women (P = .02).

CONCLUSION:

Suppressive therapy with twice-weekly metronidazole gel achieves a significant reduction in the recurrence rate of bacterial vaginosis; however, secondary vaginal candidiasis is common.

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PMID:
16647911
[PubMed - indexed for MEDLINE]
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