Your son is slightly underweight. In many children this happens due to low calorie intake, picky eating habits, or frequent minor infections, but it can improve with proper nutrition.
Next Steps
No medicines are usually required if the child is active and otherwise healthy. If you want to evaluate further, you can do CBC, stool examination for worms.
If appetite is poor, you may consider Syrup Zincovit 5 ml once daily after food for 1 month as a nutritional supplement
Health Tips
Give high-calorie nutritious foods such as eggs, milk, banana, peanut butter, ghee, paneer, and homemade snacks. Offer small frequent meals (5–6 times daily) instead of large meals.
Limit junk foods and packaged snacks, and encourage outdoor play and regular meal routine, which naturally improves appetite and weight gain. contact me any time on Practo for further consultation.