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Nathalie Hayek reviewed
"Customer service was quick to respond and medication arrived the very next day!"
Anthony Limasol reviewed
"Quick, fast and reliable service. Use Welzo monthly for my medication."
Remeece Freeman reviewed
"No fuss, and fast delivery. Welzo dispatched my order the same day and it arrived in the morning."
24 Reviews
Sale price £11.49
In stock.
24 Reviews

Trimethoprim is an antibiotic that is used for the treatment of Urinary Tract Infections....

Trimethoprim is an antibiotic that is used for the treatment of Urinary Tract Infections. It can treat cystitis and other mild to moderate urinary tract infections and recurrent urinary tract infections in females. 

UTIs can cause uncomfortable symptoms, such as a burning feeling when urinating and abdominal pain. Trimethoprim is an effective antibiotic to treat those symptoms and eradicate the infection. 

Common reasons our customers use Trimethoprim:

  • An effective antibiotic for cystitis in women and other urinary tract infections (UTIs).

  • Quick resolution of symptoms, including discomfort while urinating or facing an increased urge to urinate.

  • Trimethoprim tablets comes in the form of convenient oral medication. 

  • Effective treatment with antibiotics like trimethoprim can help prevent infections from spreading or becoming more severe, leading to a quicker recovery and avoiding potential complications.

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Pricing is provided as a reference. Treatment will be shown after completing the consultation. The final decision on issuing this medication remains with the prescriber.
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Nathalie Hayek reviewed
"Customer service was quick to respond and medication arrived the very next day!"
Anthony Limasol reviewed
"Quick, fast and reliable service. Use Welzo monthly for my medication."
Remeece Freeman reviewed
"No fuss, and fast delivery. Welzo dispatched my order the same day and it arrived in the morning."
As seen in
The_Daily_Mirror_logo - welzo
yahoo_01d90440-d295-40e7-9266-347e0db579ff - welzo
metro_1 - welzo


What is Trimethoprim?

Trimethoprim is a medication that can be effectively used to treat cystitis in women and other urinary tract infections (UTIs). A urinary tract infection is caused when bacteria from outside of your body gets in to the urinary tract. This inflammation then results in cystitis. 

How does it work?

Trimethoprim works by entering the bladder and working on the affected area of bacterial infection. It kills the bacteria and prevents them from proliferating. It then effectively treats the existing infection. It is important not to delay the treatment and commence as soon as you have the symptoms of cystitis. 

Is Trimethoprim right for me?

If you are experiencing discomfort while urinating or facing an increased urge to urinate, you could have a Urinary Tract Infection. Trimethoprim can treat mild UTIs. However, it may not be suitable for you if the following applies:

  • If you are allergic to Trimethoprim or any other ingredients in the medicaton
  • If you are pregnant or breast-feeding long term
  • If you have a severe anaemia or severe blood disorders
  • If you have severe liver problems

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, here are some commonly reported side effects:

  • Headache
  • Stomach discomfort
  • Thrush
  • Irritation to Skin or Rashes
  • Vomiting

Disclaimer: This website does not constitute 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 envelopes. You will not have to worry about any content descriptions, and the package will be for your eyes only!


Potential and Commonly Used Dosage Guidelines for Trimethoprim

One tablet swallowed whole with water, twice a day for three days, started at the onset of symptoms.

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.

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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 for Trimethoprim and Upload ID

Once you have completed the quick online form, select the treatment option most suitable to you and checkout securely. If you are eligible for treatment you will be asked to upload an ID and whole body picture.

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A medical professional will review your answers to the online medical consultation and determine if it’s safe to prescribe and what treatments are available.

Buy Trimethoprim Online

Please note the information below is intended for general knowledge, please read the patient information leaflet and/or the information provided by a healthcare professional for more specific guidance. This information should not substitute medical advice.

You can buy Trimethoprim 200mg online from our UK-registered online pharmacy partners. Complete an online consultation form and our system will show you if you are eligible to purchase Trimethoprim online. Our pharmacists will then review your order of Trimethoprim and dispatch it discreetly to your address.

How to buy Trimethoprim online?

You can buy Trimethoprim by following the following steps.

  1. Fill out our online consultation form
  2. If you are eligible to purchase Trimethoprim you will be shown it as one of your treatment options along with the available trimethoprim dose
  3. Pay online and receive your order to the comfort of your chosen address

Can I get Trimethoprim on the NHS?

Whether or not you can get Trimethoprim tablets on the NHS is dependent on your local guidelines and eligibility status. It is best to contact your local GP service if you are unsure of whether you can get Trimethoprim from the NHS.

Can you get Trimethoprim over the counter?

No, you can’t get Trimethoprim tablets over the counter without a prescription or consultation. Trimethoprim tablets is a regulated medication so all purchases need to have a prescription and/or suitable consultation form completed.

Can I buy Trimethoprim online even if I have never taken it before?

A prescribing pharmacist will need to review your consultation form before the medication can be dispatched. One of our partner prescribing pharmacists will review the consultation form and will decide if you are eligible to buy Trimethoprim.

Is Trimethoprim safe?

If you have been prescribed Trimethoprim 200mg then it is at the discretion of the prescriber.

However, all medications can potentially have adverse effects and should be taken exactly as prescribed. If you experience any side effects when taking Trimethoprim 200mg then you should contact a doctor immediately.

Trimethoprim is commonly prescribed to treat urinary tract infections, a prevalent health issue affecting the urinary system. This medication is effective against a range of bacterial infections, notably those affecting the urinary and respiratory tracts. Trimethoprim works by targeting and inhibiting a substance called folic acid, which is crucial for the growth and reproduction of bacteria. By disrupting the production of folic acid, Trimethoprim hinders the development of bacteria, thereby helping to clear infections.

While it's primarily known for its effectiveness in treating urinary tract infections, it's also used for certain types of respiratory tract infections. However, like any medication, the safety of Trimethoprim for an individual depends on various factors including their overall health, other medications they may be taking, and their specific medical history. It's important to consult a healthcare professional to determine if Trimethoprim is a safe and appropriate treatment option.

Are there any foods that should be avoided when taking Trimethoprim?

We recommend you read the patient information leaflet for this product thoroughly before taking the treatment. This is essential to understanding any interactions that can occur and to take the medication safely.

Typically, it is recommended to avoid alcohol while taking the medication or other antibiotics, please consult your doctor for more guidance.

Can I buy Trimethoprim from Boots?

It is generally possible to purchase medication, including Trimethoprim200mg, from UK pharmacies like Boots. However, I recommend checking the Boots website or contacting Boots directly for the most current and accurate information. Remember to consult with a healthcare professional before starting any new medication.

Can I buy Trimethoprim from Superdrug?

If you would like to buy Trimethoprim, you will need to check availability on the Superdrug website.

Can I buy Trimethoprim from Amazon?

Amazon does not sell medication such as Trimethoprim, as they are not a pharmacy service provider. Always check with Amazon to see what they sell.

How long does Trimethoprim take to work?

The time it takes for a Trimethoprim 200mg to work can vary greatly depending on several factors, such as the strength, the individual's age, weight, and overall health, as well as any potential interactions with other medications or substances. Generally, the effects of Trimethoprim may be noticeable within the time frame outlined by the prescribing pharmacist. It is important to follow the prescribed dosage and instructions provided by your healthcare professional, and to consult them if you have any concerns or questions about the medication's efficacy or possible side effects.

How effective is Trimethoprim?

The effectiveness of Trimethoprim 200mg can vary significantly depending on various factors, such as the dosage, the condition being treated, the individual's age, weight, and overall health, as well as the presence of any other medications or substances that might interact with it. While some medications may be highly effective for certain individuals and conditions, others might experience a lesser degree of benefit or may require adjustments to the dosage or additional treatments to achieve the desired results.

What are the risks of taking Trimethoprim?

At Welzo, we are dedicated to providing our customers with accurate and comprehensive information about medications. We believe that understanding the potential risks and side effects associated with a medication is essential for making informed decisions about your health. This guide outlines some general considerations for assessing the risks of medication and includes references to the National Health Service (NHS) for further information.

  1. Read the Patient Information Leaflet (PIL): Every medication comes with a Patient Information Leaflet, which provides essential details about the drug, its uses, and potential side effects. Be sure to read this leaflet carefully before starting any new medication. The Electronic medicines compendium has a list of patient leaflets. you can visit by heading to
  2. Be aware of potential side effects: All medications have the potential to cause side effects, ranging from mild and short-lived symptoms to more serious, long-lasting issues. It's important to understand the possible side effects of a medication and how to manage them. The NHS has a helpful resource on managing medication side effects, while also speaking to a healthcare professional is important in understanding any potential risks of taking Trimethoprim.
  3. Interactions with other medications: Some medications may interact with others, leading to increased side effects or reduced effectiveness. Make sure to inform your healthcare professional about all the medications and supplements you are currently taking. The NHS offers a useful tool for checking potential drug interactions here.
  4. Contraindications and precautions: Certain medical conditions or factors may make it unsafe for you to take a particular medication. Before starting any new medication, inform your healthcare professional about your medical history and any current health issues. The NHS provides more information about contraindications and precautions here.
  5. Appropriate use and dosage: It's crucial to follow the prescribed dosage and instructions for taking a medication to ensure its effectiveness and minimise the risk of side effects. The NHS has a useful guide on using medicines safely here.
  6. Monitoring and follow-up: Some medications require regular monitoring or follow-up appointments with your healthcare professional to ensure their safety and effectiveness. Be sure to schedule and attend these appointments as needed.

Can I buy Trimethoprim in the UK?

Yes, you can buy Trimethoprim 200mg tablets in the UK with a valid prescription and or consultation form. Trimethoprim is available in the UK for purchase from local pharmacies with a valid prescription and or consultation and to purchase from Welzo if in stock. It is imperative that you ensure that the pharmacy you are buying the products from is licensed and registered with the General Pharmaceutical Council (GPhC).

Where can I buy Trimethoprim?

You can buy Trimethoprim 200mg tablets online from upon completion of a consultation form and a free review from a prescribing pharmacist.

Are Trimethoprim users satisfied with the product?

We have a list of reviews from customers taking Trimethoprim 200mg tablets at the bottom of this page. For more information of the reviews of Trimethoprim head over to for further details.

Can I buy Trimethoprim from an online pharmacy?

Yes, you can purchase Trimethoprim 200mg tablets from an online pharmacy. However, this is dependent on your eligibility for the medication.

How much does Trimethoprim cost?

The costs of Trimethoprim 200mg tablets are listed at the top of the page. Pricing is provided as a reference as treatment options will be shown upon completing the consultation form.

Additional Information on Trimethoprim 200mg

Trimethoprim 200mg, the usual dose, is a potent antibiotic primarily used to treat bacterial infections, particularly those related to urinary infections such as cystitis. This medication operates by inhibiting the bacterial production of a vital substance, folic acid, thereby preventing the growth and spread of the infection.

While it is highly effective in managing urinary tract infections, it's essential to be aware of certain precautions. Individuals with severe liver problems, or blood disorders, should consult their healthcare provider before using Trimethoprim, as it may not be the safest option for them. Additionally, it's a common misconception that cranberry juice can treat urine infections; however, while it may help alleviate cystitis symptoms by preventing bacteria from adhering to the bladder walls, it should not replace medical treatment with antibiotics like Trimethoprim.

As with any antibiotic, it's crucial to complete the full course as prescribed, even if symptoms improve, to effectively treat bacterial infections and prevent antibiotic resistance.

Can I drink alcohol while taking Trimethoprim?

It is generally recommended that you avoid drinking alcohol while taking Trimethoprim or any other antibiotic. Alcohol can increase the risk of side effects from Trimethoprim, such as dizziness, headache, and nausea. Drinking alcohol can also make it more difficult for your body to fight off infection. If you do choose to drink alcohol while taking Trimethoprim, it is important to drink in moderation and to stay hydrated.

When should you take Trimethoprim?

Trimethoprim should be taken as prescribed by your healthcare provider. It is typically taken twice a day, with or without food. If you have trouble swallowing pills, Trimethoprim is also available as a liquid. It is important to take Trimethoprim at evenly spaced intervals to maintain a constant level of medication in your body. Missing doses of Trimethoprim can increase your risk of developing resistance to the medication.

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.

Is Trimethoprim a strong antibiotic?

Trimethoprim is a broad-spectrum antibiotic that means, its effective against many types of bacteria. Trimethoprim should only be used to treat infections that are caused by bacteria. It should not be used to treat viral infections such as the common cold or flu.