Sulfafurazole

Sulfafurazole (INN, also known as sulfisoxazole) is a sulfonamide antibacterial with an dimethyl-isoxazole substituent. It possesses antibiotic activity against a wide range of Gram-negative and Gram-positive organisms. It is sometimes given in combination with erythromycin (see erythromycin/Sulfafurazole) or phenazopyridine. It is used locally in a 4% solution or ointment.