Used as a sulfonamide antibiotic in veterinary medicine, particularly in the treatment of bacterial infections in livestock. It works by inhibiting bacterial growth through interference with folic acid synthesis. Commonly applied in the management of urinary tract, respiratory, and gastrointestinal infections in animals. Its use has declined over time due to the rise of more effective antibiotics and concerns over antibiotic resistance. Occasionally used in research settings to study antimicrobial efficacy and resistance mechanisms.