Diarrhea is a common clinical condition in veterinary medicine, affecting a wide range of animal species from domesticated pets like dogs and cats to livestock such as cattle and pigs. It can arise from various causes, including infections, dietary indiscretion, toxins, parasites, and underlying systemic diseases. Diarrhea not only leads to discomfort for the animals but also poses risks of dehydration, electrolyte imbalances, and in severe cases, can be life-threatening. Therefore, the use of antidiarrheal drugs plays a crucial role in veterinary practice.