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Home / Cystitis / Trimethoprim


Buy Trimethoprim 100mg or 200mg tablets for cystitis online in the UK

  • Pack of 14 Trimethoprim Tablets BP 200mg
  • Box of Trimethoprim tablets with blister pack
  • Front and rear view of Trimethoprim 200mg tablet blister packs
4.7 88 patient review(s) review
Dr. Caroline Fontana
Dr. Caroline Fontana Prescribing Doctor

Please note that the first line treatment for cystitis that is caused by a bacterial UTI is Nitrofurantoin, as there is quite a high bacterial resistance to Trimethoprim. Therefore it is wise to only use Trimethoprim to treat a UTI after a urine test has confirmed that the bacterial strain causing the infection is sensitive to Trimethoprim. Please note that this treatment is currently only offered for female patients. If you are male and are experiencing symptoms of a urinary tract infection, you should visit your GP or a sexual health clinic as this could be a sign of another infection or a more serious underlying problem.

What is Trimethoprim?

Trimethoprim is a course of antibiotics in the form of tablets that is proven effective medication against cystitis.

This medicine regulates infections caused by bacteria and is commonly used for a number of bladder infections and urinary tract infections – the most common being cystitis – as well as chest infection. At euroClinix, we only offer Trimethoprim in 100mg and 200mg to treat cystitis. The 100mg dosage is used on a continual basis if you suffer from cystitis regularly. The 200mg dosage is used when needed for recurrent bouts.

For the majority of urine infections including cystitis, bacteria from the bowel transferred to the urethra is the primary cause. Trimethoprim tablets work quickly within the body to cure the cystitis infection, while reducing the uncomfortable symptoms in as little as 24 hours. It's far more effective than over-the-counter treatments as these often only address the symptoms and not the infection itself. It is also the most often-prescribed medication for women who suffer from reoccurring infections, as it is so easy to take.

How does Trimethoprim work?

Trimethoprim is an antibiotic under the title of 'broad spectrum antibiotic'. Trimethoprim relieves the body of bacteria that causes the infection within the body, allowing the body to fight off the infection on its own.

It's active ingredient of the same name – Trimethoprim - works by specifically targeting the bacteria causing the infection in order to treat the cystitis directly. It does this by inhibiting the bacteria from producing foliate acid, which is essentially what the organism needs to survive and multiply. Without this, the bacteria cannot spread and so the immune system is able to destroy it. This is why it is also so effective as a preventative treatment.

How to take Trimethoprim

Trimethoprim is available in tablet form in a dosage of either 100mg or 200mg. Usually, you will be prescribed Trimethoprim 200mg, which needs to be taken twice a day for three to 14 days to effectively cure the infection. Trimethoprim 100mg or 200mg tablets should be taken with a glass of water and can be taken with or without food.

This will ultimately depend on the severity of the cystitis. It can however also be taken as a preventative treatment in the long-term, where 100mg tablets are usually prescribed as a daily dose.

It is particularly important to take your antibiotics exactly as instructed, and to finish the entire course of medication even if the infection disappears after the first treatment. This is because bacteria can slowly build up a resistance to the medication if it is not completed.

In most cases, after a short course of Trimethoprim, urine infections are completely treated. In other cases longer term are needed to avoid the reappearance of this infection.

Exact prescription instructions will accompany the treatment and are available to read at the bottom of this page.

Trimethoprim dosages

Trimethoprim is available to buy in two dosages of 100mg and 200mg at euroClinix. The 200mg Trimethoprim course of tablets is the recommended dose for a bout of cystitis and is taken for a maximum of two weeks.,/p>

The 100mg dose of Trimethoprim is recommended for those looking for a long-term preventative treatment of the infection, which will be establish by a medical professional.

Precautions of Trimethoprim

Most women over the age of 18 will be able to take Trimethoprim tablets, but some patients should avoid this treatment. You are unlikely to be prescribed this medication if you fall into one or more of the following groups:

  • Pregnant
  • Kidney disease
  • Blood disorder

Some antibiotics may also react negatively with other medication, which is why disclosing all medical information and medicines you are taking, either during your consultation or with your own doctor before purchasing is so important.

It is particularly important to take your antibiotics exactly as instructed, and to finish the entire course of medication even if the infection disappears after the first treatment. This is because bacteria can slowly build up a resistance to the medication if it is not completed.

Trimethoprim side effects

Side effects of Trimethoprim are unlikely. Firstly, the treatment for a recurrent bout is taken for two weeks, so if you do experience any side effects, these tend to disappear once you have completed the course. In addition, the 200mg dosage is generally well tolerated.

For those buying Trimethoprim as a preventative treatment, a smaller dosage will usually be supplied meaning the risk of side effects with both 200mg and 100mg is low. If you do experience side effects, these can include nausea, vomiting, headaches, common cold symptoms, joint pain and rashes.

If you're experiencing severe side effects of Trimethoprim, or an allergic reaction to the medication, it's important to seek medical attention.

Where can I buy Trimethoprim online?

You can buy Trimethoprim online at euroClinix safely and securely. You will need to complete an online consultation form, which our doctor will review to assess suitability for this treatment. This is entirely confidential. A prescription is then created upon doctor's approval. Your prescription will then be handed over to our pharmacy to dispense Trimethoprim tablets (100mg or 200mg). All next day delivery in the UK is free of charge, when ordered before 4.30pm. If you have any uncomfortable symptoms of a bladder infection, you needn't leave the house in search for fast and effective medication.

Please note that the manufacturer of Trimethoprim may differ from that which is shown in the image above, but the ingredients, benefits and possible side effects of the medication will be the same.

Treatment Information
Treatment Information
Product Name: Trimethoprim
Active Ingredient(s): Sulfamethoxazole
Manufacturer: Crescent Pharma
Description: Trimethoprim is an antibiotic that is used as an effective treatment for the bladder infection cystitis.
Exemption: Subject to medical prescription
Administration: Oral
Presentation: Tablets
Available Dosage: 100mg, 200mg
Application: Women over 18 with the symptoms of cystitis
Posology: Take 1 tablet twice a day for up to 14 days
Drug class: Sulfonamides and folic acid inhibitors
Alcohol consumption: No influence
When breastfeeding: Caution is recommended, ask your doctor
When pregnant: Caution is recommended, ask your doctor
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Current reviews for the treatment Trimethoprim

Rated with 4.7 based on 88 independent customer reviews (See all euroClinix reviews).

  • Excellent Product Review:: Effective drug 07 Oct
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  • Excellent Product Review:: Good quality 21 Aug
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