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Metronidazole is an antibiotic that is used to treat bacterial infections. It can be used to treat a wide variety of infections, including respiratory tract infections, skin infections and GI tract infections.

Important information: Welzo does not offer controlled substances or all prescription items on the website. This page should only be regarded for informational purposes if this is a controlled substance or an item we do not offer for regulatory reasons.

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Jordan Christchurch reviewed
"Fast, easy to use and very responsive customer service. Prices are also very competitive."
RJ Layton reviewed
"5 Start service is so much easier than going to my local pharmacy, especially when feeling under the weather."
Bianca Carthright reviewed
"No fuss, and fast delivery. Welzo dispatched my order the same day and it arrived in the morning."
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What is Metronidazole?

Metronidazole is an antibiotic medication that kills bacteria and parasites in the body. It can treat many kinds of infections including Bacterial Vaginosis (BV). 

How does it work?

For BV, this antibiotic works by killing the excess bacteria and returns the correct balance of bacteria back to the vagina. 

Is Metronidazole suitable for me?

If you are experiencing symptoms of BV including a thin and watery discharge and a strong fish smell, ask your doctor about the best treatment options for you.

The product images shown may represent the range of products, or be for illustration purposes only and may not be an exact representation of the product.

Side Effects

All medications can cause potential side effects, below we have listed some potential side effects, however, these do not always occur.

  • Numbness, tingling, pain or a feeling of weakness in the arms or legs
  • Unpleasant taste in the mouth
  • Furred tongue
  • Feeling sick (nausea), being sick (vomiting), upset stomach, or diarrhoea
  • Loss of appetite
  • Fever
  • Feeling depressed
  • Pain in your eyes (optic neuritis)

Disclaimer: This website does not constitute as medical advice, you should also consult with a doctor before taking medication. If you experience any major reactions to any medication you are taking, you must seek immediate medical attention.


Next Day Delivery Guarantee

All orders placed before 14:00 on weekdays will be delivered the next working day. For the majority of the UK, medication will be dispatched by Royal Mail, Monday to Friday, if ordered before 14:00. Dispatches are sent using Royal Mail's Next-Day Tracked 24-Hour service. We will email you tracking information directly and you should receive your order the day after dispatch.

Our Discreet Packaging Promise

We know that many of our customers turn to us when they need personal medication, preferring to use our online service rather than shopping for the product face to face. That is why our delivery is always discreetly packaged in plain brown boxes or enveloped. You will not have to worry about any content descriptions, and the package will be for your eyes only!


Commonly Used Dosage Guidelines for Metronidazole.

Take one tablet twice a day for seven days. Take with or after food.

Disclaimer: This website does not provide medical advice. No information listed on this website is intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment before undergoing a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.

Additional Information

Metronidazole is also sometimes used to treat other conditions, such as rosacea or certain types of diarrhoea. Metronidazole is available in both oral and topical forms.

Metronidazole Side Effects 

Side effects of metronidazole include nausea, vomiting, diarrhoea, constipation, headache, dizziness, and metallic taste. Some people may also experience a rash or hives. If you experience any serious side effects, such as severe abdominal pain or difficulty breathing, you should seek medical attention immediately.

Metronidazole is a prescription medication, so it should only be used under the guidance of a healthcare professional. If you are pregnant or breastfeeding, you should not take metronidazole.

Metronidazole can interact with other medications, so be sure to tell your healthcare provider about all the medications you are taking, including over-the-counter drugs and supplements. Metronidazole should not be used with alcohol, as this can result in severe side effects.

Talk to your healthcare provider about whether metronidazole is right for you.

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How it works
Complete a Quick & Free Online Consultation

This is a quick process and should only take 1 - 2 minutes. All of your answers are confidential, and just like a GP consultation, you will know what treatment is most suitable for you instantly upon completion.

Place Your Order

Once you have completed the quick online form, select the treatment option most suitable to you and checkout securely.

Express Next Day Delivery

We will dispatch your order using our express next-day courier service from our pharmacy partners across the UK. You will receive your treatment discreetly to the comfort of your home/ selected address. 

Can I use Metronidazole and drink alcohol?

No, you should not drink alcohol while taking Metronidazole. Drinking alcohol while taking Metronidazole can cause unpleasant side effects, such as:






How quickly does Metronidazole work?

Metronidazole begins working immediately to kill the bacteria that are causing your infection. However, it may take a few days for your symptoms to improve.

Is this medication suitable for me?

Please get in touch with a doctor if you are unsure what medication is suitable for you. You can also complete our online consultation form to check your eligibility for the product.

How is the medication delivered?

All orders placed before 14:00 from Monday to Friday will be dispatched that day. The orders are sent using 24 Hour Tracked delivery provided by Royal Mail. Items will usually arrive the very next day after the order has been placed. We also provide tracking for your orders to check the status and location of your parcel. All our medication is packaged in plain confidential padded white or brown envelopes. This ensures that your orders are discreet, and the content of the orders will be for your eyes only.

What type of antibiotic is Metronidazole?

Metronidazole is a type of antibiotic called a nitroimidazole. Nitroimidazoles work by killing the bacteria that cause infections.

What bacterial infections does Metronidazole treat?

Metronidazole is an antibiotic that is used to treat bacterial infections. It is effective against a wide variety of bacteria, including those that cause:


-Bacterial vaginosis

-Cystic fibrosis


-Infectious diarrhoea

-Pelvic inflammatory disease

How do I order my medication?

Some products only require an online consultation which approximately takes 1 minute to complete, enabling you to then buy the product. Other products will also require a prescription; in this case, you will need to complete the online consultation, and then one of our partner pharmacy prescribers or doctors will review the online consultation questions and approve the order for delivery if you are eligible to purchase the item.

Can I cancel or return my order?

For non-medicinal products, you are eligible to return the product within 14 days of receipt in the same packaging you received. For medicinal products, you are eligible to cancel the order only until it has been dispatched. From that point forward, you are no longer eligible to return the order.

You have the right to cancel your order for medication up to the point when your medication is dispatched.

Why Welzo
Discreet next day shipping
Discreet next day shipping

Welzo prescription medication is shipped out for next-day delivery in discreet packaging.

Trusted UK Pharmacy
Trusted UK Pharmacy

Welzo only works with UK-based pharmacies. All our medication is authentic and issued by GPhC-registered pharmacies and prescribers.

Supportive & Caring
Supportive & Caring

Our team of clinicians and health experts can support you along every step of your treatment journey.

Why Welzo