Metronidazole Tablets


Bacterial vaginosis is a common infection that causes unusual vaginal discharge (with a strong fishy smell). A 7 day treatment course of Metronidazole will treat this infection.

Price Checker

Metronidazole Tablets

Please note: Our price checker is only to be used as a reference of our price for this medication. If you are approved by our prescribers, they will decide on a suitable treatment for you to jointly consider.

What are Metronidazole tablets?

Metronidazole tablets are an antibiotic used to treat a variety of issues including Bacterial vaginosis. Bacterial vaginosis (or BV) is a common vaginal infection and the most common cause of unusual discharge in women, although 50% of women will have no symptoms at all. The most common symptom of Bacterial vaginosis is unusual vaginal discharge that has a strong fishy smell, particularly after sex. You may notice a change to the colour and consistency of your discharge, such as becoming greyish-white and thin and watery.

Metronidazole tablets treat Bacterial vaginosis by fighting the bacteria that cause it therefore reducing the symptoms. Bacterial vaginosis can be caused by a change in the natural balance of your vagina, and the cause is not fully understood. Some common triggers include:

  • Being sexually active (but women who have not had sex can also get BV)
  • A change of partner
  • Having an IUD (contraception device)
  • Using perfumed products in or around your vagina


Despite common perception BV is not an STI, though it can be worsened by sex and passed between women during sex. Although having BV will make you more likely to catch an STI, as BV makes your vagina less acidic and reduces your natural defences against infection. To avoid this use a form of barrier protection such as a condom.

The dosage and amount of Metronidazole tablets will vary depending on the type of infection, for BV 400mg of Metronidazole should be taken twice a day for a 5- 7 day period and you should preferably take the tablet during or after a meal. Metronidazole tablets can be very useful at preventing the symptoms of BV progressing, they should clear up over 2-3 days, continue the treatment course even if you are better.

Always consult your doctor or prescriber before trying a new medication. Metronidazole tablets can be purchased from your local pharmacy or online. This will require a short 2 minute health questionnaire to verify you are receiving the correct medication. When buying Metronidazole tablets or any other medication online make sure to buy from reputable, registered pharmacies.

How do I take Metronidazole tablets?

To treat Bacterial vaginosis take one 400mg Metronidazole tablet twice a day for 7 days. Take each tablet at the same time each day ie. breakfast and dinner. Always follow what your doctor or pharmacist has prescribed and finish the full course of treatment. Contact your doctor or prescriber if you have any questions about how to take Metronidazole tablets for BV.

Symptoms of Bacterial vaginosis?

Bacterial vaginosis is generally harmless but can be reoccurring and unpleasant. The common symptoms include:

  • Thin, gray, white or green vaginal discharge
  • Foul-smelling “fishy” vaginal odor
  • Vaginal itching
  • Burning during urination


Many women will not experience any symptoms at all. You should see a doctor when:

  • You have vaginal discharge that’s new and associated with an odour or fever. Your doctor can help determine the cause and identify signs and symptoms.
  • You’ve had vaginal infections before, but the colour and consistency of your discharge seems different this time.
  • You have multiple sex partners or a recent new partner. Sometimes, the signs and symptoms of a sexually transmitted infection are similar to those of bacterial vaginosis.
  • You try self-treatment for a yeast infection with an over-the-counter treatment and your symptoms persist.


If you have any questions about Bacterial vaginosis you can use our free Ask a Pharmacist service and contact a registered UK pharmacist for advice.

Side effects of Metronidazole tablets?

Like all medication Metronidazole tablets have possible side effects. Read the Metronidazole tablet patient information leaflet for more information, here are some of the common side effects:

  • feeling sick (nausea)
  • being sick (vomiting) or diarrhoea
  • metallic taste in your mouth or a furry tongue


Go to a doctor straight away if you have any of these symptoms (these are very rare):

  • You get swelling of the hands, feet, ankles, face, lips or throat which may cause difficulty in swallowing or breathing, an itchy, lumpy rash (hives) or nettle rash (urticaria) as this could be an allergic reaction
  • A serious but very rare side effect is a brain disease (encephalopathy) which can cause a fever, stiff neck, headache, see or hear things that aren’t there and problems with speaking or feel confused.
  • You develop skin rashes including Stevens-Johnson syndrome or toxic epidermal necrolysis. These can appear as reddish target-like spots or circular patches often with central blisters on the trunk, skin peeling, ulcers of the mouth, throat, nose, genitals and eyes and can be preceded by fever and flu-like symptoms
  • Yellowing of the skin and eyes
  • Unexpected infections, mouth ulcers, bruising, bleeding gums, or severe tiredness
  • Severe stomach pain which may reach through to your back


For more information about the possible side effects read the Metronidazole tablet patient information leaflet.

Interactions with Metronidazole tablets and alcohol/food?

Do not drink any alcohol while you are taking Metronidazole tablets and for 48 hours after finishing your course. Drinking alcohol while using Metronidazole tablets might cause unpleasant side effects, such as feeling sick (nausea), being sick (vomiting), stomach pain, hot flushes, very fast or uneven heartbeat (palpitations) and headache.

Antibiotics are best taken with a full stomach to avoid gastric issues.

There are no interactions between Metronidazole tablets and food.

Interactions with Metronidazole tablets and other drugs?

Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines. This includes medicines obtained without a prescription, including herbal medicines. This is because Metronidazole tablets can affect the way some other medicines work.

Also, some other medicines can affect the way Metronidazole tablets works. In particular tell your doctor if you are taking any of the following medicines:
Medicines used to thin the blood such as warfarin

  • Lithium for mental illness
  • Phenobarbital or phenytoin for epilepsy
  • 5 fluorouracil for cancer
  • Busulfan for leukaemia (cancer of the blood cells)
  • Ciclosporin – to prevent the rejection of organs after transplant
  • Disulfiram for alcoholism


If you are not sure, talk to your doctor or pharmacist before taking Metronidazole tablets.

What if I forget to take my Metronidazole tablets?

If you forget to take Metronidazole tablets, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose. Do not use a double dose to make up for a forgotten dose.

Can I take Metronidazole tablets when pregnant?

Tell your doctor before using Metronidazole tablets if:

  • You are pregnant, might become pregnant or think you may be pregnant. Metronidazole tablets should not be taken during pregnancy unless considered absolutely necessary.
  • You are breast-feeding. It is better not to use Metronidazole tablets if you are breast-feeding. This is because small amounts may pass into the mother’s milk.

Is there any reason I would not be able to take Metronidazole tablets?

Do not take Metronidazole tablets if:

  • You are allergic (hypersensitive) to metronidazole, nitroimidazoles (e.g. tinidazole) or any of the other ingredients in your medicine
  • Signs of an allergic reaction include: a rash, swallowing or breathing problems, swelling of your lips, face, throat or tongue.
  • You have or have ever had a liver problem
  • You are having kidney dialysis
  • You have a disease of the nervous system


If you are not sure if any of the above apply to you, talk to your doctor or pharmacist before taking your medicine. Do this even if they have applied in the past.

Why should I take Metronidazole tablets?

Bacterial vaginosis can be unpleasant and embarrassing, even though it is a very common female problem that most women will have had experience with. The discharge and odour can be unpleasant, which is why Metronidazole tablets are a great solution. You will notice symptoms clearing up over a few days making it a fast and effective solution. It can purchased online from e-Surgery with free delivery (there is also a premium next day delivery available), so that you can clear up your BV quickly and effectively.

Alternative to Metronidazole tablets?

Some other medical treatments for BV include:

  • Clindamycin (Cleocin, Clindesse, others). This medicine is available as a cream that you insert into your vagina. Clindamycin cream may weaken latex condoms during treatment and for at least three days after you stop using the cream.
  • Tinidazole (Tindamax). This medication is taken orally. Tinidazole has the same potential for stomach upset and nausea as oral Metronidazole does, so avoid alcohol during treatment and for at least three days after completing treatment.


Bacterial vaginosis is often recurrent, and some frequent sufferers report changes to diet that re balance the bacteria in the vagina such as eating certain types of yogurt (though more study is needed). Avoiding triggers such as perfumed products and soaps and avoiding tight or uncomfortable underwear has also reportedly helped some women.

How do I store Metronidazole tablets?

Store Metronidazole tablets in a cool, dry place as per the patient information leaflet, and do not consume after the expiry date.

Can I buy Metronidazole online?

Yes, you can legally order Metronidazole tablets from registered online prescribers such as e-Surgery.

Whenever you are buying Metronidazole tablets or any other medication, make sure you check for the green GPhC and MHRA logo on the bottom of each page of the website you are using.

Where can I get more information about Metronidazole tablets online?

You can learn more about this medication in the Metronidazole tablet patient information leaflet, which contains more useful information.

You can also use our completely free Ask-a-Pharmacist service to get health advice from a trained professional. We’re here to help!

How much are Metronidazole tablets to buy online?

You can buy Metronidazole tablets online from e-Surgery for £15.95 for a 7 day complete course.

How will my Metronidazole tablets be delivered?

e-Surgery uses Royal Mail delivery with choices starting from Royal Mail 48 tracked delivery, Royal Mail tracked 24 and Royal Mail 1pm special delivery (discover more about e-Surgery delivery). Your Metronidazole tablets will arrive in discreet, recyclable packaging at a delivery address of your choice. Find out to recycle packaging from e-Surgery.

What does the Metronidazole tablets pack contain?

The Metronidazole tablet pack contains a patient information leaflet and a blister pack containing 14 400mg Metronidazole tablets. This is a 7 day course, 1 tablet to be taken twice a day.

How to dispose of Metronidazole tablets bought online?

Metronidazole tablets come in blister packs that are not currently recyclable, so once they have been used can be disposed of in a general waste bin. If the Metronidazole tablets are unfinished dispose of medication safely and drop them off at a local pharmacy. Cardboard packaging and paper patient information leaflets are recyclable. For any more information on disposal of Metronidazole tablets you can use our free Ask-a-Pharmacist service.