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Drug Information

THYROID DRUG INFO: Levothyroxine

Thyroid Drugs Brand Names

  • Armour Thyroid
  • Bio-Throid
  • Cytomel
  • Levothroid
  • Levoxyl
  • Levo-T
  • Naturethroid
  • Synthroid
  • Tapazole
  • Thyrogen
  • Thyrolar
  • Unithroid
  • Westhroid

    Generic Thyroid Drug Names
  • Levothyroxine /L-thyroxine (Synthroid, Levoxyl, Unithroid, etc.)
  • Liothyronine (Cytomel/T3)
  • Liotrix (Thyrolar)
  • Methimazole (Tapazole)
  • Propylthiouracil / PTU
  • Natural thyroid (Armour, Naturethroid, Bio-tech)
  • Thyrotropin alfa (Thyrogen)
  • Time-released T3, compounded

    Thyroid Drug Manufacturers
  • Abbott Labs
  • BIO-TECH Pharmacal
  • Forest Pharmaceuticals
  • Genzyme
  • Jerome Stevens
  • King Pharmaceuticals
  • Mova Pharmaceuticals
  • Western Research Laboratories

    Thyroid Drugs News & Articles

    Drug Interaction Checker



    Levothyroxine (Also known as "l-thyroxine)

    Pronunciation: lee-voe-thye-ROCKS-een, ell-thye-ROCKS-een

    Brand Names

    Brand names in the U.S: Synthroid, Levothroid, Levoxyl, Unithroid, Levo-T
    Brand names in Canada: Synthroid, Eltroxin, and PMS-Levothyroxine

    Brand names outside U.S.: Euthyrox, Thyroxine, Berlthyrox, Droxine, Eferox, Elthyrone, Eltroxin, Eutirox, Letrox, Levaxin, Levotirox, Levothyrox, Levotiroxina, Oroxine, T4KP, Thevier, Throxinique, Thyradin, Thyradin S, Thyrax, Thyrax Duotab, Thyrex, Thyro-4, Thyrosit, Thyroxin, Thyroxin-Natrium, Tiroidine


    Levothyroxine is the generic name for synthetic thyroxine, a thyroid hormone replacement drug. This drug contains the synthetic form of one thyroid hormone, T4. Levothyroxine is the most commonly prescribed thyroid hormone replacement drug.




    Consumer Information Summary

    General Information


    book-sm.jpg - 6710 BytesIf you are taking thyroid hormone replacement drugs, like Synthroid, or Levoxyl, or Armour, then you are most likely "hypothyroid" and you can benefit from the life-changing information in the bestselling book, Living Well With Hypothyroidism. The book features a must-read detailed chapter on thyroid drugs that can truly help you to Live Well, and how to get your doctor to consider a switch to one of the T4/T3 drugs.
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