Sulfamethoxazole-trimethoprim

Drug Details

Sulfamethoxazole/trimethoprim, also known as SMZ/TMP, is a combination antibiotic used to combat a variety of bacterial infections. This medication, available under brand names like Bactrim and Septra, effectively treats urinary tract, ear, and respiratory infections, as well as certain types of diarrhea, including those caused by Shigella and traveler's diarrhea. Additionally, it is used to prevent and treat a specific lung infection known as Pneumocystis pneumonia. The drug combines sulfamethoxazole, a sulfonamide, with trimethoprim, an antifolate. Together, they inhibit the production of folic acid, a vital nutrient for bacterial growth and survival, thereby eliminating the bacteria. This medication is generally taken orally in tablet form twice daily, but it is also available as a suspension for those who have difficulty swallowing pills and as an injection for hospital patients. Common side effects may include nausea, diarrhea, and rash. It is important to note that this antibiotic should not be given to children under two months old due to potential severe side effects. Sulfamethoxazole/trimethoprim is effective only against certain bacterial infections and does not treat viral infections like the flu. Misuse or unnecessary use of antibiotics can decrease their effectiveness. Always consult with a healthcare professional before starting any new medication to ensure it is appropriate and safe for your condition.