Diarrhoea is a symptom of a variety of conditions and it constitutes one of the main causes of morbidity and mortality among infants and children throughout the world. Diarrhoea is a problem not only of the developing countries but also of the Western countries. Globally, there are nearly 1.7 billion cases of diarrhoeal disease every year. Globally four billion episodes of diarrhea were estimated to occur each year with > 90% occurring in developing countries.