according to Fried’s Rule, the child’s dosage would be 40 units (whatever the units of the medication are) for a 3-month-old child, assuming the adult dosage is 200 units.
However, the calculation was based on the age of the child only. Please note that pediatric dosages should be determined and administered by a qualified healthcare professional based on multiple factors including weight, age, specific condition, and other relevant medical considerations. Always consult a healthcare provider for accurate dosing instructions for children.