Urinary & Sexual Health

Bacterial Vaginosis (BV): Symptoms & UK Online Doctor Treatment

5 min readLast reviewed 24 April 2026

Educational information — not medical advice.

This article was prepared by the OnlineDoctor24 editorial team and reviewed for factual accuracy against UK clinical guidance (NHS and NICE). It is not written by a doctor and does not replace personal medical advice. For symptoms specific to you, book an online doctor consultation.

Key points

  • BV is an imbalance of vaginal bacteria, not a yeast or STI.
  • Symptoms: thin grey-white discharge with a fishy smell, often worse after sex.
  • Metronidazole tablets or vaginal gel clears most cases in a week.
  • Recurrence is common — longer regimens may help.
  • An online GP can assess and prescribe.

Symptoms

  • Thin, grey or white discharge
  • Fishy smell, especially after sex
  • Usually no itching or soreness (unlike thrush)

Treatment

  • Metronidazole 400 mg twice daily for 5–7 days.
  • Metronidazole 0.75% vaginal gel daily for 5 nights.
  • Clindamycin 2% cream as alternative.
  • Recurrent BV: longer maintenance courses or vaginal probiotics.

Frequently asked questions

Common questions UK patients ask about bacterial vaginosis.

How an online doctor can help

This article is for general information only and does not replace personal medical advice from a qualified doctor. Content is reviewed against UK NHS and NICE guidance by the OnlineDoctor24 editorial team and is not authored by a medical doctor. If your symptoms worsen or you are unsure, please book a consultation with a GMC-registered GP.

See a UK GP about this today

Same-day video or phone consultations with GMC-registered GPs. Prescriptions, sick notes and referrals when clinically appropriate.