13 Nov 2017: Dr Fox has temporarily suspended the supply of trimethoprim for cystitis. Trimethoprim cannot currently be ordered. This is because of increasing antibiotic resistance to trimethoprim. We are looking at supplying a more effective antibiotic, nitrofurantoin, and hope to have this available within a few weeks.


Trimethoprim 200mg treatment for cystitis – for recurring infection. Be prepared with a standby antibiotic to keep for when needed.

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  1. Read medical information about cystitis
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Cystitis treatmentQuantityCost
Trimethoprim 200mg6 tablets (1 course of treatment)£9.50

Prescription issued online - small prescription fee per order.

Compare prices: Dr Fox prices are 25%-50% lower cost than other online clinics.

Prescription fees

Dr Fox supplies medicine on prescription and charges a small prescription fee based on the order value of each prescription.

Prescriptions are issued by our doctors online and sent electronically to our pharmacy.

If you have your own private paper prescription please post to our pharmacy (details).

Dr Fox prices are 25%–50% lower than other UK online clinics.

Order valuePrescription fee
up to £10£1.00
up to £20£3.00
up to £50£5.00
up to £100£8.00
over £100£10.00
Comparative costs of Trimethoprim 200mg x 6 from UK online clinics (13 September 2016) - qualifying notes
*Dr Fox adds a small prescription fee not included in table above.
  1. The prices shown are listed by the online clinics named after a customer first enters consultation information and is offered prescriptions. It is possible these clinics may have special offers or lower prices for repeat supplies.
  2. Prices may change and are, to the best of our knowledge, accurate on the date stated.
  3. Dr Fox does NOT claim to provide a superior service to any of the online clinics listed. All the clinics listed, as far as we can tell, comply with all regulation and, as far as we can tell, operate to high ethical standards.
  4. Dr Fox adds a small prescription fee not included in the table (between £1 and £10 depending on value of the order).
  5. To amend the information in this table please contact us
  6. The prices listed in the table do not identify the cost of prescription medicine as online clinics charge a single fee to cover services which includes advice, consultations, prescriptions and dispensing and supply of treatments.
ItemsDr Fox*Pharmacy2USuperdrugExpress PharmacyLloydsMed Express
Trimethoprim 200mg x 6£9.50£15.00£23.00£19.99£19.99£19.99
UK delivery£2.90£3.45included£2.95included£2.90

Delivery charges

UK delivery only: £2.90 per consultation via Royal Mail 24 Signed For (1-4 working days).

Parcel forwarding services are not permitted.

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About Trimethoprim


Cystitis symptoms

Urine is usually free from bacteria. In cystitis bacterial infection in the urine causes irritation in the bladder, leading to burning when passing water and, usually, a need to run to the toilet frequently. There may also be an offensive smell to the urine which may be cloudy and blood stained.


Cystitis is not normally a serious condition, however, occasionally infection can travel up into the kidneys leading to a serious infection known as pyelonephritis.

Pyelonephritis is infection in the kidneys that can cause kidney damage. The symptoms of pyelonephritis are: high fever, back ache, shivering, headache, nausea and vomiting. Pyelonephritis requires urgent medical attention and sometimes hospital treatment.

Recurring infection

Doctors often can not find out why a woman is getting repeated episodes of cystitis. When a woman first starts having these infections tests are sometimes carried out. The tests are usually normal.

In some women cystitis is associated with recent intercourse or can be associated with stress. However, most water infections seem to start for no particular reason. If a woman has repeated episodes of cystitis, and the pattern of infection and symptoms are not changing, doctors usually just treat each infection as it arises with antibiotic.

Treatment of cystitis

Short courses of antibiotic will normally cure cystitis. Trimethoprim 200mg taken twice a day for 3 days is the most widely used antibiotic for the treatment of cystitis. It will usually cure 60% to 85% of urine infections, although cure rates vary over time and in different parts of the country.

Trimethoprim side effects

Trimethoprim is well-tolerated with no, or very mild, side effects. There may be stomach upsets, such as indigestion and loose stools. If a rash develops after taking trimethoprim, treatment should be stopped and medical advice sought.

Alternate treatment

When Trimethoprim is ineffective, or not suitable, other antibiotic can be tried. During infection it also helps to drink plenty, about 4 litres or 5-6 pints a day. Citrate sachets, available from chemists, that de-acidify the urine, can also help.

Other antibiotics commonly used to treat cystitis include ciprofloxacin, norfloxacin, ofloxacin, co-amoxiclav (Augmentin), and nitrofurantoin. These antibiotics are sometimes a first choice or are an alternative to trimethoprim. They are not available from Dr Fox.


Sometime the frequency of cystitis infections can be reduced by wearing natural fibre rather than synthetics next to the skin. Drinking plenty each day also helps to keep the bladder flushed and can help to reduce infections. Passing water after intercourse can help for women who tend to get infections after intercourse. These simple measures maybe helpful in preventing infection, although often they are not.

Patient information leaflet

The 'Patient Information Leaflets' supplied with medication must be read before taking.

Trimethoprim Patient Information Leaflet

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Authored 18 February 2010
by Dr Tony Steele, MB ChB

Reviewed 28 November 2016 by Dr B. Babor, MB ChB

Last updated 13 November 2017

Product reviews

Trimethoprim rated 9.78/10 in 81 product reviews

See over 10,000 service reviews of Dr Fox

very good product

10/11/2017 11:48
Anonymous Verified

It really acts quickly reducing the pain.

07/11/2017 12:28
Anonymous Verified


05/11/2017 15:21
E. Kruczkiewicz Verified

Cleared quickly

24/10/2017 16:23
Anonymous Verified

Worked quickly and felt so much better

13/10/2017 13:16
Anonymous Verified

thank you so much it saved me from suffering an extra six days before my results came back from hospital I knew it was positive as I tested my own pee twice

11/10/2017 14:59
I. Thorpe Verified

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