Age

Daily dose of levothyroxine (mcg/Kg/day)

0 - 6 months old

10 - 15

7 - 12 months old

6 - 8

1 - 5 years old

5 - 6

6 - 12 years old

3 - 5

>12 years old

2 - 3

Adults

1.6 - 1.7