Levothyroxine

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Synonyms / Brand Names: (-)-Thyroxine, 3,3',5,5'-Tetraiodo-L-thyronine, L-Thryoxin, L-Thyroxine, Laevothyroxinum, Levo-t, Levothyroxine Sodium, Tetraiodothyronine, THX, Thyroxine iodine, Levothyroxin, T4 levothyroxine, O-(4-Hydroxy-3,5-diidophenyl)-3,5-diiodo-L-tyrosine, Eltroxin, Euthyrox, Laevoxin, Letter, Levaxin, Levolet, Levothroid, Levothyrox, Levoxine, Levoxyl, Novothyrox, Oroxine, Synthroid, Synthroid Sodium, Thyratabs, Thyrax, Thyreoideum, Thyro-tabs, Thyroxevan, Thyroxin, Thyroxinal, Unithroid

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Phone:617-525-6884

Dosing and Administration

In patients with severe hypothyroidism, the recommended initial Levothyroxine sodium dose is 12.5 to 25 mcg/day with increases of 25 mcg/day every 2 to 4 weeks, accompanied by clinical and laboratory assessment, until the TSH level is normalized.
Levothyroxine sodium tablets should be taken in the morning on an empty stomach, at least one-half hour before any food is eaten. Levothyroxine sodium tablets should be taken at least 4 hours apart from drugs that are known to interfere with its absorption.

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