Table 2.

Recommended initial dosing schedule of levothyroxine for pediatric patients (Bourgeois and Varma 2005)

Age	Recommended dosage level
<6 months	8–10 μg/kg/d PO or 25–50 μg/d PO
6–12 months	6–8 μg/kg/d PO or 50–75 μg/d PO
1–5 years	5–6 μg/kg/d PO or 75–100 μg/d PO
6–12 years	4–5 μg/kg/d PO or 100–150 μg/d PO
>12 years	2–3 μg/kg/d PO or 150 μg/d PO
IV/IM = 50%–75% of PO dose