Maximum Quantity Allowed:
200 mg
Pack of 6

What Is Trimethoprim?

Trimethoprim is an antibiotic used to treat bladder cystitis and urinary tract infections (UTIs). The drug helps relieve the burning pain, itching, and discomfort that comes with UTIs. Trimethoprim helps women, who are more prone to UTIs than men, to manage their symptoms. It is advisable to maintain cleanliness and sexual hygiene to prevent UTIs from recurring. Taking a three-day course of Trimethoprim will clear most bladder and urinary tract infections. Trimethoprim is recommended where nitrofurantoin is unsuitable for treating cystitis due to side effects.

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How Does Trimethoprim Work?

Most cystitis originates from the gut, known as E.coli. Trimethoprim does not kill E.coli. It works by stopping bacterial DNA synthesis, meaning that the bacteria cannot replicate. This allows your immune system to destroy the infecting bacteria until they get eradicated and your infection gets resolved. The bacteria gets out of the body through the urinary tract when urinating. Symptoms including high temperatures and pain improve with 24-48 hours of taking Trimethoprim. However, you should complete the entire course to avoid bacterial resistance to the drug.


Warnings for Trimethoprim

Avoid Trimethoprim for treating UTI infections if the following apply to you:
  • You are allergic to Trimethoprim.
  • You have liver or kidney problems.
  • You have folate deficiency.
  • You have hyperkaliemia.
  • You have galactose intolerance.
  • You are pregnant or breastfeeding.


Directions for Using Trimethoprim

  • Trimethoprim is an oral medicine suitable for women over 18 years.
  • Take Trimethoprim 200mg tablets twice daily, one dosage every 12 hours until the prescribed course is complete.
  • Swallow the capsule with a glass of water.
  • The tablets are not affected by food or alcohol.


Trimethoprim Ingredients

Your treatment contains 200mg of Trimethoprim per tablet. Each tablet also contains the inactive ingredients anhydrous lactose, colloidal silicon dioxide, magnesium stearate, sodium lauryl sulfate, sodium starch glycolate, and stearic acid.

Side Effects

Side Effects of Trimethoprim

Like all medicines, some patients experience unpleasant side effects when taking Trimethoprim. Even though the drug is generally well-tolerated, consult your GP if you experience:
  • Diarrhoea.
  • Nausea and vomiting.
  • Stomach upset.
  • Loss of appetite.
  • Changes in taste.
  • Headache.

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