Sulfamethoxazole and trimethoprim injection is a combination of sulfamethoxazole, a sulfonamide antimicrobial, and trimethoprim, a dihydrofolate reductase inhibitor antibacterial, indicated in adults and pediatric patients two months of age and older for treatment of infections caused by designated, susceptible bacteria.

• Pneumocystis jirovecii Pneumonia
• Shigellosis
• Urinary Tract Infections