Bacterial vaginosis treatment
Buy your bacterial vaginosis (BV) treatment online from Asda Online Doctor. We can prescribe antibiotics in gel, cream, or tablet form to clear up your BV.
Prices from £14.00
One of our doctors will review your order and prescribe a treatment if suitable. How to Order
Request prescription bacterial vaginosis medication quickly and discreetly using our online service. We can prescribe BV antibiotics such as metronidazole (tablets or vaginal gel) or clindamycin vaginal cream. Alternatively, we also offer an antiseptic BV vaginal tablet called Fluomizin.
A doctor will review your symptoms and check it’s safe to prescribe the treatment. After approval, we’ll ship your BV treatment to your home for free, or you can collect it from your nearest Asda Pharmacy.
Learn more about what causes BV, common symptoms of BV, and the different treatments for BV on this page.
Bacterial vaginosis treatments
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Bacterial vaginosis treatment
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As bacterial vaginosis (BV) is caused by an overgrowth of bad bacteria, the main treatments are:
- a course of antibiotics – usually, the antibiotic metronidazole is given, but clindamycin can also be used
- antiseptic treatments, such as Fluomizin
BV medication can be taken as oral tablets or as a cream, tablet, or gel that’s inserted into the vagina using an applicator. No matter what form you use, BV antibiotics and antiseptics help clear up symptoms in a few days, but they may not stop your symptoms from coming back.
If your BV symptoms return, speak to your doctor for advice on other treatments you could try.
To get the full effect of your treatment, you should complete the full course and avoid missing any doses, even if you feel better. If you forget your dose, take the next one as soon as you remember, unless it’s almost time for your next dose, then skip it and take the next one as normal.
If you’re pregnant, it’s important to discuss treatment with a doctor, as not all BV treatments will be suitable for you.
BV antibiotic tablets
Metronidazole is the most commonly prescribed treatment for BV and is a generic antibiotic tablet taken by mouth. It’s usually prescribed at a strength of 400mg, twice a day, for 5 to 7 days. In some cases, a single large dose of 2g of metronidazole may be given.
Metronidazole works by damaging the DNA of the bacteria that cause bacterial vaginosis, causing the bacteria to die and BV symptoms to improve.
Metronidazole tablets are an effective BV treatment. The single-dose (2g option) is 86% effective, while the typical 7-day (400mg twice daily) course is 97% effective.
Do not drink while taking metronidazole and for 48 hours after stopping, as alcohol can interact with metronidazole and cause sickness and vomiting.
BV antibiotic creams and gels
BV creams and gels can be inserted into the vagina to treat symptoms at the source. Some of these creams contain antibiotics to kill the bacteria causing BV while others contain lactic acid to support the good bacteria in the vagina.
You can request Zidoval (metronidazole) vaginal gel and Dalacin (clindamycin) vaginal cream from Asda Online Doctor. Both contain antibiotics.
Zidoval
Zidoval gel contains 7.5mg of metronidazole in every gram of gel. One application of gel is 5g. You’ll use it every night for 5 nights in a row. To use Zidoval, fill the applicator and insert it into the vagina while lying on your back. Release the gel into the vagina by pushing down, remove the applicator, and throw it away.
Zidoval is similarly effective to metronidazole tablets, with 87 to 91% of people treated successfully.
Dalacin
Dalacin cream contains 20mg of clindamycin in every 1 gram of cream, and one dose of cream is 5g. This antibiotic BV cream is also inserted into the vagina using an applicator and should be used every night for 7 days.
Dalacin studies show that 83% of BV cases are successfully treated within 1 month.
Non-antibiotic treatments for BV
Vaginal BV tablets called Fluomizin contain the active ingredient dequalinium chloride, an antiseptic. Fluomizin can clear the bacteria that cause BV by attacking their cell wall so they can no longer survive. Fluomizin tablets are inserted directly into your vagina using an applicator and work directly at the site of infection.
Fluomizin has been shown to cure 97% of BV infections. The usual dose is 1 vaginal tablet every night, for 6 nights in a row. Fluomizin may be a suitable alternative if you cannot take BV antibiotics or would prefer a treatment with a lower risk of side effects.
You should not use an internal treatment like Dalacin, Zidoval, or Fluomizin if you’re on your period. In this case, wait until your period is over or speak to a doctor about an oral tablet.
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Although many people take BV treatment without a problem, some people can experience side effects. These are usually mild and can be managed at home, but more serious side effects should be discussed with a doctor. Antibiotics tend to have more side effects than antiseptics like Fluomizin.
Side effects of antibiotic vaginal gels and creams
Common side effects include:
- inflammation or infection of the vulva and vagina
- vaginal discharge
- menstrual disorders
- itching
- stomach cramps, constipation, diarrhoea, feeling sick (nausea), or being sick (vomiting)
- headache and dizziness
- an unpleasant taste in your mouth
- dry skin
- unusual feeling on your tongue
- fungal infections or thrush
- respiratory infections
- UTI (urinary tract infection)
- decreased appetite
Uncommon side effects include:
- allergic reactions
- bacterial infections
- depression
- tiredness or sleeping difficulties
- irritability
- unusual feeling in your toes and fingers
- gurgling or bloated stomach and farting
- metallic taste in your mouth
- vaginal bleeding
- nosebleed
- vertigo
- bad breath
- pain when urinating
- pelvic pain
Side effects of metronidazole tablets
For metronidazole tablets, the most common side effects are gastrointestinal symptoms, such as feeling or being sick. One study found more than 50% of people taking metronidazole tablets had these side effects.
This can typically be managed by eating smaller amounts of plain food and staying hydrated. They should get better after finishing the course of antibiotics.
Other, much rarer side effects include:
- low blood cell count
- psychotic disorders, including confusion or hallucinations
- swelling of the brain
- vision disorders
- jaundice
- pancreatitis
- liver injury or inflammation
- rashes
- itching
- flushing
- muscle or joint pain
- dark urine
- anaphylaxis (allergic reaction)
If you experience any of these rare side effects, speak to a doctor straight away, and call 999 in an emergency, such as if you’re struggling to breathe or are confused.
Side effects of Fluomizin
Common side effects include:
- vaginal discharge, itching, or burning
- thrush
Uncommon side effects include:
- bleeding from the vagina
- bacterial vaginosis
- pain in the vagina
- swelling of the vagina (vaginitis) and vulva
- fungal skin infections
- headache
- nausea
Other side effects include:
- cystitis (inflammation of the bladder)
- bleeding from the urethra (the hole where urine comes out)
- fever
- an allergic reaction with symptoms like rash, swelling, or itching
- vaginal redness or dryness
- ulcers inside the vagina, if the skin inside your vagina was already damaged before treatment
A full list of side effects for each treatment can be found in the patient information leaflet inside the packaging.
It’s important to tell your doctor about any medical conditions you have or medications that you’re taking before taking BV treatment. This will help your doctor make sure it’s safe for you to take the medication.
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Bacterial vaginosis can lead to uncomfortable symptoms, increased vaginal discharge, and an unpleasant odour. Although mild symptoms do not necessarily need treatment, they can cause discomfort, and you may feel self-conscious.
Getting treatment helps to restore the natural balance of bacteria in the vagina, giving the good bacteria a chance to flourish. It should improve any symptoms that are bothering you.
Having BV can also increase your risk of catching STIs, as the normal bacteria that protect your vagina are depleted. This means it’s often a good idea to seek treatment if you are sexually active. In some cases, your sexual partner may also need treatment.
If you are terminating a pregnancy or about to undergo a gynaecological procedure, you’ll likely need treatment for BV even if you’re not experiencing symptoms. This is because there’s a risk that the bacteria causing BV could be spread to the womb.
Women who are pregnant are usually also treated for BV, as it can increase the risk of early labour and miscarriage.
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You can get BV treatment from your GP, a sexual health clinic, or you can request it online from a reputable service like Asda Online Doctor.
Can you buy BV treatment online?
Yes, you can request bacterial vaginosis treatments from Asda Online Doctor, by:
- completing a short online health assessment for one of our doctors to review
- placing your order
If approved, your order will be dispatched and sent to your home address in discreet packaging, or you can choose to collect it from your local Asda Pharmacy 4 hours after a doctor’s approval. If your order is not approved, one of our doctors will contact you through your patient account with alternative treatment options.
Ordering from Asda Online Doctor makes it quick and easy to get the treatment you need, and there’s no need to work around your GP's opening hours or wait for a face-to-face appointment.
Is BV treatment available over the counter?
No, antibiotics for BV require a prescription, so they are not available to buy over the counter. Other treatments for BV, like lactic acid, can be bought over the counter, but there’s limited evidence as to how effective these treatments are.
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Bacterial vaginosis is an infection of the vagina that’s caused by an overgrowth of bad bacteria.
It’s normal for there to be bacteria inside your vagina, but BV happens when there’s too many of the “bad” bacteria and not enough of the “good” bacteria.
This imbalance can cause the pH of the vagina to become less acidic than normal which in turn makes more of the bad bacteria grow.
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Although BV does not always cause symptoms, it can cause the normal vaginal discharge to change and become:
- white or grey and more watery
- fishy smelling
- heavier and more fishy after sex or after a period
It’s possible to experience some itching or soreness, but this is not common.
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BV is more common if you’re sexually active, especially after a recent change in partner or if you have sex with different partners quite often. You can still get BV even if you’re not sexually active, though.
Other factors that can trigger BV include:
- smoking
- having a copper coil (intrauterine device)
- using bubble bath
- having long or heavy periods
- hormonal changes, like pregnancy or menopause
- taking antibiotics
- too much washing around the vagina
- using scented products around the vagina
- douching or washing inside the vagina
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There’s not always a clear trigger for BV, and you may not be able to prevent it all the time. But you can try to avoid doing things that are known to trigger BV as much as you can.
This means:
- showering rather than taking baths
- avoiding scented products near your vagina
- stopping smoking
- changing period products often
If your BV does not clear up after treatment or you get symptoms again soon after, it’s best to get it checked out by a doctor in case there’s another cause for your symptoms. You may need to take antibiotic treatment for longer to stop BV from coming back, usually if you get it more than 4 times in a year.
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Frequently asked questions
How long does BV treatment take to work?
You should notice an improvement in your BV symptoms a few days after starting treatment, but it’s important to complete the whole course of treatment to get the full effects.
How long do you have to take BV treatment?
That depends on which treatment you take. Some antibiotic BV tablets are taken as a single dose, but typically, all BV medication is taken daily for 5 to 7 days. Always take your BV treatment as instructed by a healthcare professional.
Can I have sex while taking BV treatment?
It’s not recommended. Men can also carry BV bacteria, so while you can still have penetrative sex while taking BV medication, doing so could make your symptoms worse and pass the infection onto your partner, who then may reinfect you.
If you’re using an internal treatment like vaginal gel, cream, or tablets, these may affect how effectively condoms and other forms of contraception work, meaning you’re also at higher risk of pregnancy. As semen has a high pH, it can affect the balance of the vagina, so it may be best to wait until after you have finished treatment.
It’s also important to consider that sex can trigger or worsen BV symptoms, so if this is the case for you, it might be best to wait until you finish treatment.
If you do want to have sex during treatment, avoid sex for 12 hours after using Fluomizin.
Can I get BV treatment with next-day delivery at Asda Online Doctor?
Yes, as long as your order is approved by one of your doctors, you can order your BV treatment and get it delivered the next day. Please check our delivery information page for further advice.
Will bacterial vaginosis go away on its own?
Yes, often BV will improve on its own as the vagina restores the natural balance itself, though this will take longer than without treatment in most cases. Some people find they need a bit of extra help to get rid of BV or want to improve their symptoms quickly.
Are there natural remedies for bacterial vaginosis?
Some natural remedies for bacterial vaginosis are discussed online. However, there is not much clinical evidence behind these, like there is for medicated BV treatments. Some people take probiotics or eat foods containing healthy bacteria, such as yoghurt, to help increase the amount of ‘good’ bacteria in their body. This is completely safe as long as you get your probiotics from a safe and regulated company, but it might not treat your symptoms or make them go away sooner.
There are also vaginal suppositories containing boric acid, which are meant to be a natural remedy for BV, but these only have a few very small studies behind them, and can be toxic if taken by mouth. Be very careful if you want to try a natural remedy for BV, as some companies may be selling fake products that could cause reactions and not work.
It’s best to use a doctor-approved treatment to make sure your BV is treated properly, or there’s a higher chance it could come back.
Can my partner cause my BV to come back?
Yes, BV bacteria can be passed from person to person. This could infect your partner if they have a vagina, and men can also carry the bacteria in their urethra and penis, even though they cannot be infected and get symptoms. BV can be spread through sharing sex toys, having penetrative sex, or through fingers that have come into contact with genital fluid.
A recent study also found that oral sex may trigger or worsen BV due to a bacteria in the mouth that can spread to the vagina during oral sex, though more research is needed into this.
What should I do if my BV keeps returning after antibiotics?
If your BV keeps returning after antibiotics, you may need a longer course of treatment or to try a different treatment. You should speak to your doctor so they can help. While antibiotics are highly effective, they do not work for everyone, so a different treatment may stop it from coming back. Some people are also more prone to recurrent BV, but some things you can do to help stop it returning include:
- only washing your vagina with mild soap and water
- avoiding baths
- avoiding strong detergents when washing your underwear
- asking your partner to speak to a doctor about BV treatment, as they may be carrying the bacteria and passing it back to you – men can also take BV treatment to get rid of the bacteria they may be carrying
- quitting smoking
After completing her first degree, she went on to study graduate-entry medicine at Warwick University. After graduating as a doctor, she worked within the West Midlands in Urology, Respiratory Medicine, Infectious Disease, and Psychiatry before transitioning into a full-time medical communications role.
Meet our doctorsLast reviewed: 16 Jul 2026
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Bacterial Vaginosis: What Do We Currently Know?, Frontiers in Cellular and Infection Microbiology [accessed 16 April 2026]
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Comparison of single-dose vs one-week course of metronidazole for symptomatic bacterial vaginosis, JAMA [accessed 16 April 2026]
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Dalacin cream, emc [accessed 16 April 2026]
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Efficacy of clindamycin vaginal cream versus oral metronidazole in the treatment of bacterial vaginosis, Obstetrics and Gynecology [accessed 16 April 2026]
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Efficacy of intravaginal 0.75% metronidazole gel for the treatment of bacterial vaginosis, Obstetrics and Gynecology [accessed 16 April 2026]
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