Important Facts About Trimethoprim
Most frequent questions and answers about Trimethoprim for cystitis treatment
Trimethoprim tablets are used to treat a wide variety of bacterial infections. Most commonly, Trimethoprim tablets are used for treating and long-term prevention of urinary and respiratory tract infections
Do not take Trimethoprim tablets, and tell your doctor if you:
- Are allergic to any of the ingredients
- Are pregnant
- Have any blood disorder
- Have severe kidney disease
You should NOT give Trimethoprim to premature babies or babies recently born (two weeks).
Tell your doctor or pharmacist if you are taking, or have recently taken any other medication. Below is a list of medications that you should be aware of, as they may interfere with Trimethoprim tablets:
• Antibiotics such as rifampicin
• Anticoagulants to prevent your blood clotting such as
• Digoxin (to treat heart conditions)
• Phenytoin (to treat epilepsy)
• Pyrimethamine or Dapsone (to treat malaria)
• Immunosuppressant drugs – used in cancer treatment
(e.g. Methotrexate) or to treat organ rejection after
transplant (e.g. Azathioprine or Ciclosporin)
• Bone marrow depressants
• Spironolactone (to treat fluid build up)
• Repaglinide (to treat diabetes)
• Diuretics (e.g. water tablets such as frusemide or
• Procainamide, to treat abnormal heart rhythm.
Trimethoprim tablets should NOT be used in pregnancy.
If you are breast-feeding, seek advice from your doctor or pharmacist before taking a Trimethoprim tablet course.
Trimethoprim tablets contain lactose. Therefore if you have an intolerance to some sugars, seek advice from your doctor before taking Trimethoprim tablets.
Trimethoprim tablets should be taken exactly how your doctor prescribed. If you are not sure, ask your doctor or pharmacist.
Swallow the tablets with a glass of water, the same time each day for the full course.
e-Surgery offers a 3 day course of Trimethoprim, where a Trimethoprim tablet is taken twice daily for 3 days. This quickly and effectively helps kill the bacteria that causes pain and other symptoms associated with cystitis.
As with any form of medication, Trimethoprim treatment has side effects. For a full list of side effects, please read the Patient Information Leaflet of Trimethoprim tablets. Below are a few of the common side effects of taking Trimethoprim:
• Feeling and being sick, diarrhoea
• Skin rashes, urticaria
• Anaemia (may cause you to feel tired and look pale), sore throats or mouth ulcers (due to a decrease in white blood cells), thrush
For a full list of side effects, please read the Patient Information Leaflet of Trimethoprim tablets.
Keep Trimethoprim tablets out of the reach and sight of children.
Store Trimethoprim tablets below 25°C in a dry place.
Do not use Trimethoprim tablets after the expiry date stated on the label/carton/bottle.
Trimethoprim should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of Trimethoprim if it is no longer required. These measures will help to protect the environment.