Used primarily as a veterinary antibiotic, especially in poultry and livestock, to prevent and treat bacterial infections such as coccidiosis and respiratory tract infections. It belongs to the sulfonamide class, which works by inhibiting bacterial synthesis of folic acid, essential for their growth. Commonly administered through feed or drinking water due to its oral bioavailability. Also finds use in aquaculture to control bacterial diseases in fish farming. Its application has declined in some regions due to concerns over antibiotic resistance and residue in food products.