Hai for children with constipation changing habits is best solution .. if he doesn’t drink water try giving fluids in other forms . And also Please observe if he is getting constipated every time he is eating cheese ? Just cheese or other dairy products also ? Since how long is the child not passing stool ?
Lactulose can be given but according to weight and should always be prescribed under doctors prescription.
Next Steps
Please consult a Pediatrician not a pharmacist
Health Tips
Change in diet
Increase in fluids