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Trimethoprim is an antibiotic which is primarily used to treat UTIs such as cystitis. Many people experience it to some degree, but more women than men, and it can be quite painful.
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UTI: Here are some other options.
Trimethoprim is a broad use antibiotic, which comes in tablet format. It can be used to treat a wide range of bacterial infections and is often used to treat cystitis, a common UTI.
Cystitis is an infection which causes inflammation of the bladder that is generally caused by bacteria. It mostly affects women, with about half suffering from this at some point in their lives, but it can also affect men (it’s a lot less common though). It can clear up on its own but for persistent and severe symptoms it may require antibiotics, such as Trimethoprim.
Trimethoprim is a type of antibiotic which prevents the growth of bacteria. Bacteria requires the substance folate in order to grow. Trimethoprim stops bacteria from producing folate, and this prevents the bacterial cells from duplicating themselves as they cannot produce DNA.
Because the bacteria can no longer grow and increase in number, this allows the body’s own immune system to clear up the remaining infection by destroying any infection that’s left.
Why did some practices not implement new antibiotic prescribing guidelines on urinary tract infection? A cohort study and survey in NHS England primary care. The Journal of antimicrobial chemotherapy, 74(4), 1125–1132.
Trimethoprim: antibiotic to treat bacterial infections.
Cystitis | Health Information | Bupa UK.
For instructions on specific dosages, you should always refer to the package information leaflet or the advice of your clinician. Please note Trimethoprim is not suitable for children under 6.
Usually, your doses will be as follows:
For 100mg tablets:
For oral solution:
If it’s taken correctly, you should see an improvement in your symptoms within 24 hours, and your infection should continue to clear up during the remaining course of your Trimethoprim. But if you see no improvement after the initial 48 hours of starting your medication, you should send our clinician a message and speak to them about the next steps.
An important factor is to always continue the course of treatment as advised, even if you start to feel better before it’s finished. Although it may appear that the treatment has fully worked, there may be some residual bacteria remaining, which can become resistant to the antibiotic and cause problems further down the line.
As with all medications, in order for them to have the desired effect they should be taken in the prescribed quantities and at the prescribed times given. If for some reason a dose is accidently missed at the correct time, then it can be taken when remembered as long as it is not too close to your next dose. If it is, then that dose should be missed and taken at the end of the full course. Never attempt to ‘double up’ on doses to make up for a missed dose.
If your day to day activities keep you very busy, it may be helpful to set an alarm on your phone or alarm clock to remind you to take your medication.
If you take too much Trimethoprim, you should seek medical assistance immediately.
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