Levothyroxine — paediatric dose

Weight-based dosing for Levothyroxine in children. Category: Endocrine.

Dose	Congenital hypothyroidism 10-15 mcg/kg/day; dose falls with age
Per kg	10–15 mcg/kg
Route	PO
Frequency	daily

Clinical notes

Value shown is the daily dose. Recheck TSH/free T4 and titrate.

Congenital hypothyroidism 10-15 mcg/kg/day; dose falls with age. That is 10–15 mcg/kg per dose.

Levothyroxine is given by PO, daily.

Reviewed by Dr Santanu Ghosh — MBBS, MD Paediatrics (Army), IDPCCM (IAP, ICH Kolkata). Paediatrician and paediatric critical care specialist.

Compiled from standard paediatric references. Verify against a current formulary and your local protocol.

Spotted something wrong? Report an error on this page — corrections from clinicians are welcome and are reviewed before any change is published.

Last reviewed 2026-08-12.