Cystitis treatment with trimethoprim

Trimethoprim 200mg

Antibiotic for water infection

Cystitis is caused by infection in the urine. Active medical treatment of cystitis usually involves taking an antibiotic.

Most of the infections causing cystitis in the UK are cured with the antibiotic trimethoprim. There is some antibiotic resistance to trimethoprim, however it remains effective in 90% of cases.

Update (Dec 2017): Approximately 30% of cystitis infections in the UK are now resistant to trimethoprim – nitrofurantoin (MacroBID) is no first choice treatment.

How to order
Trimethoprim is the first choice of antibiotic for most GPs.

In the UK Trimethoprim is a prescription only medicine. Dr Fox supplies trimethoprim online on prescription for less than an NHS prescription charge.

Trimethoprim for cystitis

Antibiotic works most quickly if it is started soon after onset of cystitis symptoms. Women who are prone to repeated episodes of cystitis can obtain standby courses of trimethoprim online for use on an as required basis. When they get the start of their symptoms they can take antibiotic, as soon at they need it.

How quickly should cystitis treatment work?

Most of the time symptoms improve greatly within the first 24 hours and have gone completely by the end of a 3-day course. When symptoms of cystitis are not improving or are getting worse it is quite likely the infection is resistant to trimethoprim.

Alternative diagnosis (thrush)

Symptoms of cystitis are sometimes confused with the symptoms of thrush. Dysuria (Pain on passing urine), frequency (Passing urine frequently), urgency (Inability to hold the urine in), and vaginal soreness and also be caused by thrush. Antibiotic can set thrush off or make it worse. The treatment of thrush is usually anti-fungal creams, pessaries or tablets. All these thrush treatment are available from Dr Fox online.

Alternative cystitis treatment antibiotics

There are numerous alternative antibiotics to trimethoprim for the treatment of cystitis (Urinary tract infection). These antibiotics include ciprofloxacin, co-amoxiclav, nitrofurantoin, ofloxacin and others.

Sometime cystitis will settle without antibiotics. It helps to drink plenty to try to flush through infection. Over the counter remedies can also help by altering the acidity of the urine and making it more difficult for the bacteria. Some doctors recommend cranberry juice.

When not to self-treat cystitis with trimethoprim

Most women who get cystitis repeatedly are in perfectly good health. They usually have no abnormality of the bladder or kidneys. However, in a small number of women who are prone to cystitis, particularly when the infections started in childhood, there may be kidney damage. Some women also have a tendency for their infections to go up from the bladder to the kidneys. These women should not self-treat unless they have been advised to do so by their own doctor. More about cystitis from the NHS Choices website.

Trimethoprim side effects

It is most unusual for trimethoprim given to treat cystitis to produce any significant side effects. Nausea, indigestion and bowel upset may occur. Allergic type rash are possible and can be serious. If a rash develops trimethoprim should be stopped and medical advice sought. For a full list of common side effects of trimethoprim see the Patient Information Leaflet.