Don't give any medicine in first 2 days of
loose motion except for Oral Rehydration Solution in proper concentration plus normal liquid or semisolid diet . Most of the time , it's viral in nature & subsides within 2-3 days . But watch for
dehydration ( urine output) , high grade fever ,
vomiting , alertness ,
blood in stool --- these are the few warning signs & need medication .