Font Size
A
A
A

Definition of Levothyroxine

Levothyroxine: A synthetic thyroid hormone used as a thyroid hormone replacement drug (brand names include Eltroxin, Levothroid, Levoxine, Levoxyl, Synthroid) used to treat an underactive thyroid gland (hypothyroidism). Because not all brands of levothyroxine sodium are equivalent, it is important not to switch between brand names or even between generic formulations.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=11595
Last Editorial Review: 11/16/2003


Medical Dictionary Definitions A - Z

Search Medical Dictionary


Women's Health

Find out what women really need.

Are You Depressed? Take the Quiz


Medical Dictionary