Sulfamethoxazole

Drug Details

Sulfamethoxazole is an antibiotic that inhibits bacterial growth by interfering with folic acid synthesis, a process essential for bacterial DNA production. It is commonly combined with trimethoprim, another antibiotic that blocks a subsequent step in the same pathway, resulting in a synergistic effect that enhances bacterial eradication. This combination is effective against a variety of bacterial infections, including urinary tract infections, respiratory tract infections, and certain gastrointestinal infections. Common side effects may include nausea, vomiting, loss of appetite, and skin rashes. Severe allergic reactions, though rare, can occur. Sulfamethoxazole is contraindicated in individuals with known hypersensitivity to sulfonamides and should be used with caution in patients with liver or kidney dysfunction. Its use during pregnancy is generally discouraged due to potential risks to the fetus.