Sulfafurazole (INN, also known as sulfisoxazole) is a sulfonamide antibacterial with a dimethyl-isoxazole substituent.

It possesses antibiotic activity against a wide range of Gram-negative and Gram-positive organisms.

[1] It is sometimes given in combination with erythromycin (see erythromycin/sulfafurazole) or phenazopyridine.

It is used locally in a 4% solution or ointment.

This systemic antibiotic-related article is a stub.