This is most likely acute viral gastroenteritis. Passing stools soon after eating is common due to an exaggerated gastrocolic reflex and does not necessarily mean the food is not being absorbed. As your child is active, has no fever or vomiting, and is taking fluids well, continue ORS after each loose stool, zinc supplementation for 14 days, and probiotics if advised. Avoid fruit juices and sugary drinks. Milk may temporarily worsen loose stools because of transient lactose intolerance after diarrhea, so reduce or avoid milk for a few days and offer curd instead. Metronidazole is usually not required unless specifically indicated by your pediatrician.
Next Steps
Continue a normal age-appropriate diet, monitor urine output and hydration, and review with your pediatrician if diarrhea persists beyond 7–10 days, becomes bloody, or if signs of dehydration, persistent vomiting, or lethargy develop.
Health Tips
Do not stop feeding during diarrhea. Frequent small meals, curd, rice, khichdi, banana, and plenty of fluids help recovery.