Trimethoprim tablets contain trimethoprim 200mg per tablet.

It is an antibiotic that helps to kill the bacteria that cause a number of infections including cystitis (also known as a water infection) or urinary tract infections. It is only available on prescription after a consultation with a doctor. This can be done online.

Trimethoprim is an antibiotic that kills the bacteria that is causing the infection.

Other over the counter remedies like Cymalon, Cystopurin and Canesten Oasis, neutralise the acidity of the urine. This helps to reduce the burning, pain on urination and changes the acidic environment of the bladder making it harder for the bacteria to survive.

Trimethoprim and over-the-counter remedies can be taken together. Cymalon and other over the counter remedies will help to make the urine less acidic and ease discomfort whilst the antibiotics have a chance to take effect.

Symptoms should start to ease within 24 hours and should have gone after 3 days of treatment. If you still have symptoms after this time or they become worse then you need to see a doctor face to face.

Not all antibiotics can be used to treat the same infection. They work in different ways and some work on certain bacteria whilst others don’t.

Trimethoprim is excreted mostly in the urine. This means it’s in high concentration where it’s needed and is very effective against bacteria that cause urine infections.

If you are getting recurrent urine infections it is worth visiting your doctor so they can send a urine sample away for analysis and ensure there is no underlying cause for concern. For this reason we do not recommend you use trimethoprim regularly without speaking to your doctor.

Trimethoprim is effective 90% of the time.

If you have forgotten to take a tablet, take one when you remember or if more than 24 hours have passed and then take the next tablet/capsule at the right time. Do not double up and take twice the dose.

It's important to take the tablets regularly and as the course is only for 3 days, as missing tablets could prolong the infection.

Taking a tablet first thing in the morning and last thing at night can help to remember or setting an alarm on your phone can also act as a prompt.

Yes, we understand that sometimes you want to get your treatment as soon as possible. If ordered before 4pm Monday to Friday, Trimethoprim tablets are available for next day delivery.

Trimethoprim is effective in 90% of cases and you should start to see a reduction in symptoms within 24 hours. If the symptoms have not reduced or improved within 48 hours then you would need to see a doctor face to face.

They will take a urine sample and send it off for analysis, (it usually takes two days for the results to come back). They would then prescribe a specific antibiotic to your infection depending on the results.

Whilst you are waiting for the results the doctor may prescribe another antibiotic like ciprofloxacin, norfloxacin, ofloxacin, co-amoxiclav or nitrofurantoin.

Cystitis is the inflammation of the urinary tract including the bladder. The bacteria move slowly up the urethra and multiply and this causes the burning, urgency and other cystitis symptoms.

The urethra is the tube that links the bladder to the outside world.This tube is a lot longer in men than it is in women and makes it unlikely for men to suffer from cystitis. Therefore if you are a man suffering from cystitis symptoms then you need to see a doctor for a check up because the infection can be more serious. The doctor will need to rule out enlarged or infected prostate possibility of a blockage or tumours. This applies not only to Trimethoprim but also to over the counter medicines as well.

Some women are prone to recurrent urinary tract infections and after visiting their doctor they know the symptoms. Under these circumstances it is acceptable to have a small course of Trimethoprim at hand so you can treat an infection quickly. You would need to see your GP to get antibiotics to keep in case you get a UTI — we are only able to treat current cystitis online.

All antibiotics including Trimethoprim reduce the bacteria in the body. After a course of antibiotics the bacteria in the vagina can be greatly reduced and this can cause the naturally occurring fungus to overgrow leading to thrush symptoms. Treatment is simple and varies from a capsule you swallow to a short course of creams or pessaries you apply.

It is thought that cranberry juice, extract or containing products stop the bacteria binding to the wall of the bladder. The jury is still out on this even though there are some studies to show it is effective. However, current UK guidelines say that cranberry juice doesn’t treat the symptoms or cure cystitis.

Trimethoprim is occasionally used to treat chest infections and other bacterial infections. Given how many different bacteria can cause such issues, though, you must see a GP before taking medication: the specifics of your case will determine the antibiotics you need.

Trimethoprim is one of the antibiotics that can be used to treat kidney infections. However, this will depend on the state of your kidneys and the severity of your infection, as the use of Trimethoprim is cautioned among those with impaired kidneys. If you have a kidney infection, it is important to see your GP as soon as possible.

You can find the symptoms of a kidney infection on NHS Choices.