For a 2-year-old with vomiting and diarrhea (often due to Gastroenteritis), the main treatment is fluids?give plenty of ORS. Econorm is usually given as one sachet once or twice daily, mixed with water or milk, but only as advised by a pediatrician. Continue light feeding (rice, curd, banana) and monitor for dehydration signs (less urine, dry mouth, lethargy). If vomiting is persistent, fever is high, or symptoms last more than 1?2 days, consult a doctor promptly.