Description and Brand Names

Drug information provided by: Micromedex

US Brand Name

  1. Primsol
  2. Proloprim
  3. Trimpex


Trimethoprim is used to treat infections of the urinary tract. It may also be used for other problems as determined by your doctor. It will not work for colds, flu, or other virus infections.

Trimethoprim is available only with your doctor's prescription.

Once a medicine has been approved for marketing for a certain use, experience may show that it is also useful for other medical problems. Although these uses are not included in product labeling, trimethoprim is used in certain patients for the following medical conditions:

  • Prevention of urinary tract infections
  • Treatment of Pneumocystis carinii pneumonia (PCP)

For patients taking this medicine for prevention of urinary tract infections:

  • Your doctor may have prescribed this medicine to prevent infections of the urinary tract. It is usually given once a day and may be given for a long time for this purpose. If you have any questions about this, check with your doctor.

This product is available in the following dosage forms:

  • Tablet
  • Solution