Warning
  • Trichomonas Vaginalis is associated with preterm birth delivery and low birth weight.
  • TV infection at delivery may predispose to maternal postpartum sepsis.
  • Screening of asymptomatic individuals for TV infection in pregnancy is currently not recommended.
  • Recommended treatment is 400 mg oral metronidazole twice daily for 7 days in preference to the use of short high-dose regimens which are not recommended during pregnancy. 
  • Metronidazole can be used in all stages of pregnancy and during breast feeding. 
  • Symptomatic patients should be treated at diagnosis.
  • Metronidazole enters breast milk and may affect its taste. The manufacturers recommend avoiding high doses if breastfeeding.
  • Tinidazole use of tinidazole in the first trimester is contraindicated.

Editorial Information

Last reviewed: 31/01/2024

Next review date: 31/01/2026

Author(s): West of Scotland Managed Clinical Network for Sexual Health Clinical Guidelines Group .

Version: 6.1

Approved By: West of Scotland Managed Clinical Network in Sexual Health