Sulfadiazine is a type of antibiotic that belongs to the sulfonamide class. It works by inhibiting the growth of bacteria, making it effective in treating various bacterial infections. Commonly, it is used to treat conditions like urinary tract infections and certain types of pneumonia. In addition to its use as an antibiotic, sulfadiazine is also employed in combination with other medications to treat toxoplasmosis, a parasitic infection. It is important to use this medication under the guidance of a healthcare professional to ensure proper dosage and to minimize potential side effects.