A convenient tablet option for treating Bacterial Vaginosis.
Used for
Treats bacterial vaginosis, restoring balance in vaginal flora.
How to use it*
Take 500 mg tablet twice daily for 7 days.
How long to work
Symptoms usually improve within 2–3 days, with full resolution after completing the 7-day course.
Common side effects*
Nausea, metallic taste, stomach upset, and headache.
Who should not take it*
Avoid if pregnant, breastfeeding, or have liver disease or allergies to Metronidazole.
Interactions*
Avoid alcohol, as it can cause a severe reaction. May also interact with blood thinners and epilepsy medicines.
Generic/branded
Generic: Metronidazole.
Brand: Flagyl.
*Always consult the patient leaflet for comprehensive information.
Metronidazole is an antibiotic used to treat a number of bacterial infections, namely bacterial vaginosis (BV). When taken twice daily for 7 days, it kills bacteria cells and negates symptoms of the common bacterial infection.
Metronidazole works to treat BV by damaging the DNA of the bacteria that causes bacterial vaginosis. This stops the growth of bacteria in the vagina, easing symptoms and treating your infection at the source.
Metronidazole mainly targets harmful bacteria, but it can affect levels of good bacteria too. However, once you stop taking Metronidazole tablets, your body will quickly restore the balance of healthy bacteria, leaving you feeling good and free of infection.
There are many benefits of using Metronidazole gel to treat BV:
Metronidazole targets bacteria DNA directly, meaning it doesn't just reduce symptoms, it treats the root cause of your infection.
Metronidazole tablets are taken twice daily in the morning and evening, making it easy to fit into your schedule.
Metronidazole tablets are usually only prescribed for a 7-day course, helping you get better as fast as possible.
Metronidazole is a highly effective treatment for bacterial vaginosis, completely clearing the infection within 7 days.
One clinical study found that 76% of women taking Metronidazole 500 mg tablets were completely cured, compared to just 5% of women taking a placebo.
You should notice the effects of Metronidazole within a few days of taking your first tablet. During this time, symptoms should reduce and you should start feeling better. Complete resolution of symptoms is usually felt after 7 days of consistent use. If your infection worsens or symptoms don't resolve, seek medical attention.
Take one 500 mg tablet twice per day for 7 days. Leave at least 12 hours inbetween doses to ensure a steady supply of medicine. You can take your tablets with or without food, but taking them with meals can prevent an upset stomach.
Swallow each tablet whole with a glass of water. Do not cut, crush, or chew your tablets.
If you forget to take a tablet, take it as soon as you remember, and take your next one at the usual time. If it is almost time for your next dose, skip the missed tablet and take your next one at the usual time. Do not take a double dose to make up for a missed one.
Metronidazole tablets should be taken for a course of 7 days to completely clear your infection.
Making some simple lifestyle changes can ensure treatment is effective:
Limit sexual activity
Avoid sexual intercourse while using the gel to prevent irritation and ensure the treatment remains effective.
Maintain good hygiene
Keep the vaginal area clean and dry, but make sure to avoid douching or using scented products, as these can irritate the area and worsen symptoms.
Wear breathable underwear
Wear loose-fitting, cotton underwear to reduce moisture and prevent irritation.
Stay hydrated
Drink lots of water to reduce the risk of side effects like headaches.
Store this medicine in the original packaging between 68°F to 77°F. Ensure the medicine is kept out of reach of children and pets and away from direct sunlight.
To be prescribed Metronidazole from SpeedyHealth, you must be a woman over 18 experiencing bacterial vaginosis.
Do not take Metronidazole if you:
Additionally, speak with your doctor before taking this medication if you have:
Also speak with your doctor if you are due to have a blood test, as this medication can interfere with the results of certain tests.
Taking Metronidazole can cause some side effects, although they are not very common.
The most common Metronidazole side effects include:
This is not an exhaustive list. For a full list of side effects, consult the package insert sent with your order.
Some medicines may interact with the effectiveness of Metronidazole ot increase the risk of side effects. Tell your doctor about all medications you take, especially any of the following:
Avoid alcohol during treatment and for 48 hours after finishig your course. Drinking alcohol while taking Metronidazole can cause unpleasant side effects, such as nausea, vomiting, stomach pain, hot flushes, palpitations, and headache.
No, you cannot buy this medicine over the counter. You need a doctor’s prescription to purchase this medicine. This is because a doctor must first check to see if it is suitable for you based on your symptoms and medical history.
If you need a prescription, you can fill our consultation form, it is a quick and easy process. If one of our doctors approves of your prescription, you will receive it electronically.
Choosing a trusted healthcare provider like SpeedyHealth ensures safety during treatment and the ability to manage your medicines easily.
Here's how we do things differently at SpeedyHealth:
At SpeedyHealth, this medicine starts at $44.99
Our pricing is transparent, with no hidden fees. Order today and benefit from our complete, all-inclusive service.
Medically reviewed by Dr. Adrian Rawlinson
Written by our editorial team | Last reviewed December 18, 2025
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