Bacterial vaginosis
Bacterial vaginosis
Bacterial vaginosis (BV) is a common infection of the vagina. It's harmless and easily treated. It's not classed as a sexually transmitted infection (STI).

Things you can do yourself

To help relieve symptoms and prevent bacterial vaginosis from returning:
  • use water and an emollient, such as E45 cream, or plain soap to wash your genital area
  • have showers instead of baths


  • use perfumed soaps, bubble baths or shower gel
  • use vaginal deodorants, washes or douches
  • put antiseptic liquids in the bath
  • use strong detergents to wash your underwear
  • smoke

A pharmacist can help with bacterial vaginosis

A pharmacist can recommend the most effective treatment for your symptoms.

You can buy treatments for BV without a precription, but there's no clear proof they work.

See a GP or sexual health clinic if your discharge:

  • has a strong fishy smell, particularly after sex
  • is white or grey
  • is thin and watery

Bacterial vaginosis doesn't usually case any soreness or itching.  If you're unsusre it's BV check vaginal discharge.

Sexual health clinics can help with bacterial vaginosis

Sexual health clinics treat problems with the genitals and urine system.

Many sexual health clinics offer a walk-in service, where you don't need an appointment. They'll often get test results quicker than GP practices.

Find a sexual health clinic here

What happens at your appointment

Your GP or sexual health clinic will want to confirm it's BV and rule out a sexually transmitted infection (STI).

You'll be asked about your symptoms. If it's not clear it's BV:

  • a doctor or nurse may look at your vagina
  • a cotton bud may be wiped over the discharge inside your vagina to test for other infections

This won't hurt but it may feel uncomfortable.

Treatment for bacterial vaginosis

Bacterial vaginosis is usually treated with antibiotic tablets or gel. These are prescribed by your GP or sexual health clinic.

If you're pregnant, it's often safe to use treatment.

Partners don't need treatment, unless female partners have symptoms.

Recurring bacterial vaginosis

It's common for BV to come back, usually within 3 months.

You'll need to take treatment for longer (up to 6 months) if you keep getting BV (you get it more than twice in 6 months). Your GP or sexual health clinic will recommend how long you need to treat it.

They can also help identify if something is triggering your BV, such as sex or your period.

What causes bacterial vaginsois

Bacterial vaginosis occurs when there's a change in the natural balance of bacteria in your vagina. What causes this to happen isn't fully known, but you're more likely to get it if:

  • you're sexually active
  • you've had a change of partner
  • you have an IUD (contraception device)
  • you use perfumed products in or around your vagina

BV is not classed as an STI, even though it can be triggered by sex. A woman can pass it to another woman during sex.

But women who haven't had sex can also get BV.

Bacterial vaginosis in pregnancy

If you develop bacterial vaginosis in pregnancy, there's a small risk of complications, such as premature birth or miscarriage.

However, BV causes no problems in the majority of pregnancies. Speak to your GP or midwife if you're pregnant and your vaginal discharge changes.

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The information on this page has been adapted by NHS Wales from original content supplied by NHS Choices.
Last Updated: 10/09/2018 15:01:31