Your doctor has ordered sulfamethoxazole and trimethoprim, an antibiotic, to help treat your infection. It will be added to an intravenous fluid that will drip through a needle or catheter placed in your vein for 60 to 90 or more minutes, two to four times a day.
The combination of sulfamethoxazole and trimethoprim eliminates bacteria that cause many kinds of infections, including pneumonia and urinary tract and intestinal infections. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
Your health care provider (doctor, nurse, or pharmacist) may measure the effectiveness and side effects of your treatment using laboratory tests and physical examinations. It is important to keep all appointments with your doctor and the laboratory. The length of treatment depends on how your infection and symptoms respond to the medication.
Before you administer sulfamethoxazole and trimethoprim, look at the solution closely. It should be clear and free of floating material. Gently squeeze the bag or observe the solution container to make sure there are no leaks. Do not use the solution if it is discolored, if it contains particles, or if the bag or container leaks. Use a new solution, but show the damaged one to your health care provider.
It is important that you use your medication exactly as directed. Do not stop your therapy on your own for any reason because your infection could worsen and result in hospitalization. Do not change your dosing schedule without talking to your health care provider. Your health care provider may tell you to stop your infusion if you have a mechanical problem (such as a blockage in the tubing, needle, or catheter); if you have to stop an infusion, call your health care provider immediately so your therapy can continue.
dizziness or loss of balance
loss of appetite
joint or muscle aches
yellowing of the skin or eyes
swelling of the lips or tongue
skin rash or skin changes
unusual bleeding or bruising
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/Safety/MedWatch] or by phone [1-800-332-1088].
Your health care provider will probably teach you how to prepare each dose of sulfamethoxazole and trimethoprim. Since the medication is stable for only a short time after preparation, prepare your daily doses as directed by your health care provider.
Store your medication only as directed. Make sure you understand what you need to store your medication properly.
Keep your supplies in a clean, dry place when you are not using them, and keep all medications and supplies out of reach of children. Your health care provider will tell you how to throw away used needles, syringes, tubing, and containers to avoid accidental injury.
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Last Reviewed - 09/01/2010
AHFS® Consumer Medication Information. © Copyright, 2014. The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.