Letrazuril is primarily used in veterinary medicine as an antiprotozoal agent, specifically to treat and prevent coccidiosis in animals such as poultry, cattle, and sheep. It works by inhibiting the reproduction of coccidian parasites, which can cause severe intestinal infections. The chemical is often administered through feed or water, ensuring easy and efficient delivery to livestock. Its effectiveness in controlling coccidiosis helps improve animal health, growth rates, and overall productivity in farming operations. Additionally, Letrazuril is valued for its ability to reduce the spread of infection within herds or flocks, contributing to better management of livestock health.