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Trimethoprim is a clinically proven antibiotic which will treat cystitis.

Availability: In stock


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What is Cystitis

What is cystitis?

Cystitis is an inflammation of the lining of the bladder, typically caused by a bacterial infection.
Symptoms of cystitis include:

• Burning sensation or discomfort on passing urine
• Urge to pass urine more frequently
• Lower abdominal discomfort
• Cloudy urine
• Urine that smells offensive
• Small traces of blood in the urine

Cystitis can resolve on its own accord within 48 hours and measures such as drinking plenty of fluid to flush out the bacteria and using pain relief such as paracetamol is sometimes sufficient.
However, if you have three or more of the symptoms above, then treatment with an antibiotic called trimethoprim may also be suitable for you.

About Trimethoprim

How does it work?

Trimethoprim is an antibiotic which kills the bacteria causing the infection and irritation in the lining of your bladder and urethra.  The tablets are to be taken twice daily (every 12 hours) for 3 days and as with all antibiotics, it is important that you finish the course to prevent antibiotic resistance.

Who can take it?

This treatment is only available for use in women;  cystitis in men can be more serious and needs medical attention.

Some sexually transmitted diseases can also cause cystitis and it is important to see your doctor regarding symptoms such as vaginal sores, persistent itching or pelvic pain.

In addition, if you develop a high fever or have severe back pain you must go and see your doctor in person.   Symptoms such as these indicate that your infection is more serious.

Side effects

Trimethoprim is usually well tolerated in most patients.  Side effects may include:

  • Skin rashes
  • Nausea, diarrhoea or vomiting
  • Headaches

Patient information leaflet

Always read the patient information leaflet before commencing treatment. Patient information can be found HERE.

Order Process

Ordering With Assured Pharmacy is Safe and Easy

Read the Product Information and Select Your Preferred Treatment.
Complete the Health Questionnaire That Follows in the Order Process.
Make a Secure Online Payment For Your UK Sourced & Supplied Medicine.
Our UK based GMC Doctor Will Review Your Preferred Treatment and Medical Questions, and if Appropriate, Issue a Prescription.
If Your Preferred Treatment is Not Suitable You Will Be Refunded in Full and Offered Alternative Medical Advice.
Your Medicine is Sent 1st Class Recorded With Royal Mail For Free.

Why us

Assured Pharmacy, A Pharmacy You Can Trust

Assured Pharmacy offers our patients complete peace of mind with regard to;


Safety and quality of our medication.
Qualifications of our healthcare professionals.
Competitiveness of our prices.
Accessibility for all patients.
Secure and reliable delivery service.




The Team


Superintendent Pharmacist
Giselle Goodwin
GPhC Number 2051 757



GMC Registered Doctor
Dr Roisin McHugh
GMC Number 4538 637


Have Questions?

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