Sulfachloropyridazine is primarily used in veterinary medicine as an antimicrobial agent. It is effective against a range of bacterial infections in livestock, particularly in treating gastrointestinal and respiratory infections in cattle, swine, and poultry. The compound works by inhibiting the synthesis of folic acid in bacteria, which is essential for their growth and reproduction. It is often administered orally, either mixed with feed or water, ensuring ease of use for large-scale treatment. Additionally, Sulfachloropyridazine is sometimes employed in aquaculture to control bacterial diseases in fish, contributing to healthier stock and improved yields. Its use is carefully regulated to prevent the development of antibiotic resistance and to ensure food safety for consumers.