If you are:
FDB Only When Necessary: HUMAN DATA SUGGEST NO KNOWN DEV TOX; MONITOR TSH FOR POSSIBLE DOSE INCREASES
No Known Risk: LIMITED DATA SUGGEST NO ADVERSE EFFECTS ON INFANT
An adult over 60:
management or monitoring precaution: General-Elderly may be more sensitive to l-thyroxine. Start at lower dose.
Giving Synthroid to a child under 12:
management or monitoring precaution: Monitor closely to avoid adverse effects on intellectual development and linear growth.