I always prefer http://www.speedyremedies.com/home-remedies-for-diarrhoea.html...In this ..*Soak 2 -3 tsp coriander seeds overnight in half a cup of water. Make a coarse paste mix in a glass of butter milk and drink.*Mash a ripe banana. Mix with 1 tsp of tamarind pulp and a pinch of salt. Take twice a day.*Drink a cup of strong black tea or coffee. It is very effective in controlling diarrhea.