Your Online Medical Consultation


Are you female and between 18-70 years old?

Have you previously been diagnosed with cystitis by a GP or nurse practioner?

Cystitis is also known as waterworks infection or urinary tract infection

Are you requesting medication to treat a current infection?

Symptoms of cystitis typically include the following:

  • Burning or stinging when passing urine
  • Foul smelling urine
  • Increased frequency to pass urine
  • Needing to pass urine urgently

Have you had cystitis in the last 4 weeks?

Over the last 12 months, have you had 3 or more episodes of Cystitis that were treated with prescription antibiotics?


Do you have any allergies to any medication or substances?

Such as to Trimethoprim or septrin (Co-trimoxazole)?

Answer ‘no’ if this does not apply to you

Are you taking any medication, or have you recently finished a course of medication?

Such as methotrexate


This includes medication prescribed by your doctor, bought in the pharmacy or online, herbal supplements, recreations drugs

This includes tablets, patches, inhalers, injections, contraception and all other forms of medication


Answer ‘no’ if this does not apply to you

Do you suffer from any other medical problems?

Such as:

  • Blood disorders (anaemia, G6PD deficiency, folic acid deficiency)
  • Diabetes
  • Kidney damage or having dialysis
  • Liver disease
  • Porphyria
  • Previous diagnosis of Pyelonephritis (urinary tract infection spreading to kidneys)
  • Using a catheter to drain your urine

This also includes previous admissions to the hospital or any surgeries

Answer ‘no’ if this does not apply to you

Do you have a family history of any medical conditions?

Do any medical conditions run in the family? Such as heart problems, diabetes, blood disorders etc?

Answer ‘no’ if this does not apply to you

Are you pregnant or breast feeding, think you may be pregnant or trying to have a baby?


I understand that cystitis typically presents with the following symptoms

  • Burning or stinging when passing urine
  • Foul smelling urine
  • Increased frequency to pass urine
  • Needing to pass urine urgently

I understand that I should wait 2 days for cystitis to resolve on its own before using antibiotics

This is to avoid the over-use of antibiotics resulting in antibiotic resistance

I understand that symptoms should improve within 24 hours and resolve within 3 days of starting this treatment. If symptoms do not resolve within 3 days, I will need to see my GP

I understand that if I experience any of the following, I should seek medical advice, either from the GP or NHS 111 service.

  • Back pain
  • Temperature above 37.5 degrees C
  • Unintentional shaking or chills
  • Visible blood in the urine


We strongly recommend that you inform your GP of any treatment you receive. Would you like e-Surgery to do this in your behalf?

Please write the name of your GP surgery below if you want us to let them know.

This will ensure that any new medication started by your GP will not interact with this treatment.

Answer ‘no’ if you do not want us to inform your GP

I agree to the following

  • I am 18 years of age or older
  • This treatment is for my use only
  • I confirm that I have understood all the questions asked and have answered all questions to the best of my knowledge.
  • I have read the patient information leaflet supplied with this medication
  • I will contact e-Surgery and inform my GP if I experience any side effects from this treatment or if there are any changes to my health
  • I have answered all questions truthfully and accurately.

I have read, understood and agree to abide by terms and conditions and privacy policy and cookie policy of e-Surgery

What is this?

Your answers form the basis of your medical consultation. It is important you are open and honest, so our doctors can ensure this medication safe and effective for you

Trimethoprim (3 Day Treatment Course)

Trimethoprim is an antibiotic medication commonly prescribed for urinary tract infections such as cystitis. The standard treatment consists of 200mg Trimethoprim taken twice daily for 3 days. This quickly and effectively helps kill the bacteria that causes pain and other symptoms associated with cystitis.

Please keep in mind that e-Surgery is not an acute service, therefore we only issue this medication for future use, not an acute infection.

Pick the desired treatment below and complete a short questionnaire to help our GPs make sure this medication is safe for you to take. All prices include a private prescription from one of our experienced GPs.

We strongly believe in the responsible use of antibiotics and will only issue the minimum quantity required. 


In stock

Important Facts About Trimethoprim

Most frequent questions and answers about Trimethoprim for cystitis treatment

Trimethoprim tablets are a form of antibacterial medication, used to treat and prevent bacterial infections.

Trimethoprim tablets are used to treat a wide variety of bacterial infections. Most commonly, Trimethoprim tablets are used for treating and long-term prevention of urinary and respiratory tract infections

Do not take Trimethoprim tablets, and tell your doctor if you:

  • Are allergic to any of the ingredients
  • Are pregnant
  • Have any blood disorder
  • Have severe kidney disease

You should NOT give Trimethoprim to premature babies or babies recently born (two weeks). 

Tell your doctor or pharmacist if you are taking, or have recently taken any other medication. Below is a list of medications that you should be aware of, as they may interfere with Trimethoprim tablets:


• Antibiotics such as rifampicin
• Anticoagulants to prevent your blood clotting such as
• Digoxin (to treat heart conditions)
• Phenytoin (to treat epilepsy)
• Pyrimethamine or Dapsone (to treat malaria)
• Immunosuppressant drugs – used in cancer treatment
(e.g. Methotrexate) or to treat organ rejection after
transplant (e.g. Azathioprine or Ciclosporin)
• Bone marrow depressants
• Spironolactone (to treat fluid build up)
• Repaglinide (to treat diabetes)
• Diuretics (e.g. water tablets such as frusemide or
• Procainamide, to treat abnormal heart rhythm.

Trimethoprim tablets should NOT be used in pregnancy.

If you are breast-feeding, seek advice from your doctor or pharmacist before taking a Trimethoprim tablet course.

Trimethoprim tablets contain lactose. Therefore if you have an intolerance to some sugars, seek advice from your doctor before taking Trimethoprim tablets.

Trimethoprim tablets should be taken exactly how your doctor prescribed. If you are not sure, ask your doctor or pharmacist.

Swallow the tablets with a glass of water, the same time each day for the full course.

e-Surgery offers a 3 day course of Trimethoprim, where a Trimethoprim tablet is taken twice daily for 3 days. This quickly and effectively helps kill the bacteria that causes pain and other symptoms associated with cystitis.


If you forget to take a Trimethoprim tablet, take the dose as soon as you remember it, and then take the next dose at the correct time. Do NOT take a double dose.


If you or someone else swallow more Trimethoprim tablets than you are meant to, contact your nearest hospital and alert your doctor immediately.

Do NOT stop taking Trimethoprim tablets because you feel better. Take the tablets for the full course at the given dosage, or your problem may return.

As with any form of medication,  Trimethoprim treatment has side effects. For a full list of side effects, please read the Patient Information Leaflet of Trimethoprim tablets.  Below are a few of the common side effects of taking Trimethoprim:

• Feeling and being sick, diarrhoea
• Headache
• Skin rashes, urticaria
• Anaemia (may cause you to feel tired and look pale), sore throats or mouth ulcers (due to a decrease in white blood cells), thrush

For a full list of side effects, please read the Patient Information Leaflet of Trimethoprim tablets. 

Keep Trimethoprim tablets out of the reach and sight of children.

Store Trimethoprim tablets below 25°C in a dry place.

Do not use Trimethoprim tablets after the expiry date stated on the label/carton/bottle.

Trimethoprim should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of Trimethoprim if it is no longer required. These measures will help to protect the environment.

Click here for a PDF copy of the patient information leaflet

Learn More About Cystitis

Most frequent questions and answers about cystitis

Cystitis is a common type of urinary tract infection (UTI) that causes inflammation of the bladder. 

A bacterial infection is usually the main cause of cystitis, but other causes of bladder damage/irritation can also cause cystitis. 

Cystitis is much more common in women than men, and some habits can increase the risk of cystitis, including:

  • Sex
  • Wiping from back to front on the toilet
  • Having a urinary catheter
  • Using a diaphragm for contraception

Symptoms of cystitis can include:

  • Pain when you pee
  • Needing to pee more then normal
  • Dark, smelling urine
  • Pain in the lower body
  • Feeling unwell

Mild cases will usually not require treatment, clearing in a few days. Some people experience frequent episodes of cystitis that may require long-term or regular treatment.

Prevention methods have not been fully studies; however, a few self-care measures are recommended, including:

  • Drinking plenty of fluids
  • Urinate frequently
  • Wipe from front to back on the toilet
  • Take showers rather than baths
  • Gently wash around the vagina and anus
  • Empty your bladder after intercourse
  • Avoid feminine products in the genital area

Interstitial cystitis is a chronic bladder health issue that causes long-term pelvic and urination pain. 

You should see your GP if you have persistent pelvic pain or notice a change in your usual pattern urination. 

You can find out more information about cystitis on a variety of website. These include the NHS website, Mayo Clinic and WebMD.

Read More

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