In some countries, this medicine may only be approved for veterinary use.
In the US, Levothyroxine (levothyroxine systemic) is a member of the drug class thyroid drugs and is used to treat Hashimoto's disease, Hypothyroidism - After Thyroid Removal, Myxedema Coma, Thyroid Suppression Test, TSH Suppression and Underactive Thyroid.
US matches:
- Levothyroxine
- Levothyroxine Capsules
- Levothyroxine Solution
- Levothyroxine Injection
- Levothyroxine Sodium
- Levothyroxine Sodium (T4; L-thyroxine)
UK matches:
- Levothyroxine Tablets 50mcg, 100mcg (Actavis UK Ltd)
- Levothyroxine 100mcg tablets (SPC)
- Levothyroxine 25 micrograms Tablets (Wockhardt UK Ltd) (SPC)
- Levothyroxine 50mcg tablets (SPC)
- Levothyroxine 50micrograms Tablets (SPC)
- Levothyroxine Tablets BP 100 micrograms (SPC)
- Levothyroxine Tablets BP 50 micrograms (Actavis UK Ltd) (SPC)
Scheme
BAN
CAS registry number (Chemical Abstracts Service)
0000051-48-9
Chemical Formula
C15-H10-I4-N-O4
Molecular Weight
775
Therapeutic Category
Thyroid hormone
Chemical Name
L-Tyrosine, O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-
Foreign Names
- Levothyroxinum (Latin)
- Levothyroxin (German)
- Lévothyroxine (French)
Generic Names
- Levothyroxine (OS: BAN)
- Thyroxine (OS: BAN)
- L-Thyroxine (IS)
- Thyroxinum laevogirum (IS)
- Thyroxinum (PH: Ph. Helv. VI, Editio)
- Lévothyroxine sodique (OS: DCF)
- Levothyroxine Sodium (OS: BANM)
- Levotiroxina sodica (OS: DCIT)
- Thyroxine Sodium (OS: BANM, JAN)
- Thyroxin-Natrium (IS)
- Thyroxinum natricum (IS)
- Lévothyroxine sodique (PH: Ph. Eur. 6)
- Levothyroxine Sodium (PH: BP 2010, JP XIV, Ph. Int. 4, USP 32, Ph. Eur. 6)
- Levothyroxin-Natrium (PH: Ph. Eur. 6)
- Levothyroxinum natricum (PH: Ph. Int. 4, Ph. Eur. 6)
Brand Names
- Euthycin
Incepta, Bangladesh
- Fada Levotiroxina
Fada, Argentina
- Lévothyrox
Merck Lipha Santé, Tunisia
- Novothyral (Levothyroxine and Liothyronine)
Merck, Chile
- Synthroid
Abbott, New Zealand
- Thyro-4
Faran, Tunisia
- Thyrox
Renata, Bangladesh
- Tiroxmen
Menarini, Costa Rica; Menarini, Dominican Republic; Menarini, Guatemala; Menarini, Honduras; Menarini, Nicaragua; Menarini, Panama; Menarini, El Salvador
- Bagothyrox
Bago, Russian Federation
- Berlthyrox
Berlin Chemie, Vietnam; Berlin-Chemie, Germany
- Combithyrex (Levothyroxine and Liothyronine)
Sandoz, Austria
- Cynocuatro
Grossman, Mexico
- Dermocinetic (Levothyroxine and Escin)
Geymonat, Italy
- Dexnon
Kern, Spain
- Diotroxin (Levothyroxine and Liothyronine)
Aspen Pharmacare, South Africa
- Dithyron (Levothyroxine and Liothyronine)
Uni-Pharma, Greece
- Eferox
Hexal, Bahrain; Hexal, Poland; Lindopharm, Germany
- El-Thyro
MJ Biopharm, Myanmar
- Elthyrone
Abbott, Belgium; Abbott, Luxembourg
- Eltroxin
GlaxoSmithKline, United Arab Emirates; GlaxoSmithKline, Bahrain; GlaxoSmithKline, Canada; GlaxoSmithKline, Colombia; GlaxoSmithKline, Czech Republic; GlaxoSmithKline, Denmark; GlaxoSmithKline, Guyana; GlaxoSmithKline, Hong Kong; GlaxoSmithKline, Israel; GlaxoSmithKline, India; GlaxoSmithKline, Iran; GlaxoSmithKline, Kuwait; GlaxoSmithKline, Lithuania; GlaxoSmithKline, Netherlands; GlaxoSmithKline, New Zealand; GlaxoSmithKline, Oman; GlaxoSmithKline, Philippines; GlaxoSmithKline, Poland; GlaxoSmithKline, Qatar; GlaxoSmithKline, Singapore; GlaxoSmithKline, Thailand; GlaxoSmithKline, Taiwan; GlaxoSmithKline, South Africa; Goldshield, United Kingdom; Goldshield, Ireland; Sigma-Tau, Switzerland
- Eltroxin-Thyroxin
Goldshield, Malta
- Esaldox
Gynopharm, Chile
- Euthyral (Levothyroxine and Liothyronine)
Merck Serono, France
- Euthyrox
Merck, Argentina; Merck, Austria; Merck, Belgium; Merck, Bulgaria; Merck, Bahrain; Merck, Brazil; Merck, Switzerland; Merck, Colombia; Merck, Czech Republic; Merck, Germany; Merck, Greece; Merck, Croatia (Hrvatska); Merck, Hungary; Merck, Indonesia; Merck, Iceland; Merck, Lithuania; Merck, Luxembourg; Merck, Netherlands; Merck, Norway; Merck, Oman; Merck, Philippines; Merck, Poland; Merck, Sweden; Merck, Singapore; Merck, Slovakia; Merck, Thailand; Merck, Turkey; Merck, Venezuela; Merck KGaA, China; Merck KGaA, Estonia; Merck KGaA, Latvia; Merck KGaA, Romania; Merck KGaA, Serbia; Merck Sharp & Dohme, Slovenia; Nycomed, Georgia; Nycomed, Russian Federation
- Eutirox
Bracco, Italy; Merck, Chile; Merck, Costa Rica; Merck, Dominican Republic; Merck, Ecuador; Merck, Spain; Merck, Guatemala; Merck, Honduras; Merck, Mexico; Merck, Nicaragua; Merck, Panama; Merck, Peru; Merck, El Salvador
- Eutroid (Levothyroxine and Liothyronine)
Pfizer, Peru
- Eutroxsig
Sigma, Australia
- Forthyron (veterinary use)
Albrecht, Germany; Ceva, France; CEVA Vetpharma, Sweden; Eurovet, Austria; Eurovet, Belgium; Eurovet, Netherlands; Eurovet Animal Health B.V., Luxembourg; Gräub, Switzerland; Vetcare, Finland
- Jodthyrox (Levothyroxine and Potassium Iodide)
Merck, Austria; Merck, Germany
- L Thyroxine SERB
SERB, France
- Letequatro
Upsifarma, Portugal
- Letrox
Berlin Chemie, Bosnia & Herzegowina; Berlin-Chemie, Czech Republic; Berlin-Chemie, Croatia (Hrvatska); Berlin-Chemie, Hungary; Berlin-Chemie, Poland; Berlin-Chemie, Serbia; Menarini, United Arab Emirates; Menarini, Bahrain; Menarini, Cyprus; Menarini, Egypt; Menarini, Iraq; Menarini, Jordan; Menarini, Kuwait; Menarini, Lebanon; Menarini, Libya; Menarini, Morocco; Menarini, Qatar; Menarini, Saudi Arabia; Menarini, Sudan; Menarini, Syria; Menarini, Yemen
- Letter
Sanofi-Aventis - Produtos farmacêuticos, S.A., Portugal
- Levaxin
Nycomed, Iceland; Nycomed, Norway; Nycomed, Sweden
- Leventa (veterinary use)
Intervet, Germany; Intervet, France; Veterinaria, Switzerland
- Levoroxin
Polfa Warszawa, Poland
- Levothroid
Forest, United States; Sanofi-Aventis S.A.U., Spain
- Levothyroid
IFET, Greece
- Lévothyrox
Merck Serono, France
- Levothyroxin (veterinary use)
Ceva, Netherlands
- Lévothyroxine Biogaran
Biogaran, France
- Levothyroxine Christiaens
Nycomed, Netherlands
- Levothyroxine Sodium
APP, United States; Bedford, United States; Lannett, United States; Merck, United States; Mylan, United States; Sandoz, United States
- Levothyroxine
Actavis, Indonesia; APP, Hong Kong; Goldshield, New Zealand; Pharmaceutical Partners of Canada, Canada; Wockhardt, United Kingdom
- Levothyroxine Na
Sandoz, Japan
- Levotiron
Abdi Ibrahim, Turkey
- Levotiroxina Fabra
Fabra, Argentina
- Levotiroxina Northia
Northia, Argentina
- Levotiroxina Sodica L.CH.
Chile, Chile
- Levotiroxina Sodica Marfan
Marfan, Peru
- Levotiroxina Sodica Perugen
Perugen, Peru
- Levotiroxina Sodica
Bestpharma, Chile; GlaxoSmithKline, Argentina
- Levotiroxina
GlaxoSmithKline, Ecuador
- Levoxyl
Jones, United States; King, United States
- L-T
Craveri, Argentina
- L-Thyrox Hexal
Hexal, Germany; Hexal, Estonia
- L-Thyrox Jod Hexal (Levothyroxine and Potassium Iodide)
Hexal, Germany
- L-Thyroxin AL
Aliud, Germany
- L-Thyroxin Aristo
Aristo Pharma, Germany
- L-Thyroxin Berlin-Chemie
Berlin-Chemie, Bulgaria; Berlin-Chemie, Estonia; Berlin-Chemie, Georgia; Berlin-Chemie, Lithuania; Berlin-Chemie, Latvia; Berlin-Chemie, Russian Federation
- L-Thyroxin beta
Betapharm, Germany
- L-Thyroxin Henning
Henning Berlin, Germany; Sanofi-Aventis, Austria; Sanofi-Aventis, Germany; Sanofi-Aventis, Hungary
- L-Thyroxin Jod Aristo (Levothyroxine and Potassium Iodide)
Aristo Pharma, Germany
- L-Thyroxin Jod-1A Pharma (Levothyroxine and Potassium Iodide)
1A Pharma, Germany
- L-Thyroxin
Berlin-Chemie, Romania; Berlin-Chemie, Slovakia
- L-Thyroxin-Akri
Akrihin, Russian Federation
- L-Thyroxin-CT
CT Arzneimittel, Germany
- L-Thyroxine Christiaens
Christiaens, Luxembourg; Nycomed, Luxembourg
- L-Thyroxine Sandoz
Sandoz, Lithuania
- L-Thyroxine SERB
SERB, France
- L-Thyroxine
Nycomed, Belgium
- L-Thyroxine (veterinary use)
Aesculaap, Netherlands
- L-Thyroxin-Jod beta (Levothyroxine and Potassium Iodide)
Betapharm, Germany
- L-Thyroxin-ratiopharm
Ratiopharm, Germany
- Medithyrox
Intermed, Greece
- Meprobamate
InvaGen, United States
- Novothyral
Merck, Austria; Merck, Belgium; Merck, Luxembourg
- Novothyral (Levothyroxine and Liothyronine)
Merck, Switzerland; Merck, Germany
- Oroxine
GlaxoSmithKline, Bangladesh; GlaxoSmithKline, Malaysia; GlaxoSmithKline, Singapore; Sigma, Australia
- Prothyrid (Levothyroxine and Liothyronine)
Henning Berlin, Germany; Sanofi-Aventis, Germany
- Roxin
Cadila Gehört zu Zydus, India
- Soloxine (veterinary use)
Arnolds, United Kingdom
- Synthroid
Abbott, Brazil; Abbott, Canada; Abbott, Colombia; Abbott, United States
- T4
Montpellier, Argentina; Uni-Pharma, Greece
- T4-Bago
Bago, Chile
- Tefor
Organon, Turkey
- Thevier
GlaxoSmithKline, Germany
- Thyradin
S ASKA SeiyakuAsuka, Japan
- Thyrax Duotab
Organon, Luxembourg; Organon, Netherlands
- Thyrax
Organon, Belgium; Organon, Ghana; Organon, Indonesia; Organon, Kenya; Organon, Luxembourg; Organon, Philippines; Organon, Portugal; Organon, Tanzania; Organon, Venezuela; Organon, Zimbabwe
- Thyrex
Sandoz, Austria
- Thyro-4
Faran, Romania; Faran Laboratories, Greece
- Thyrohormone
Ni-The, Greece
- Thyrolar (Levothyroxine and Liothyronine)
Forest, United States
- Thyronajod (Levothyroxine and Potassium Iodide)
Henning Berlin, Germany; Sanofi-Aventis, Germany
- Thyrosin
Techno, Bangladesh
- Thyrosit
Sriprasit, Singapore
- Thyroxin
Orion, Finland
- Thyroxine (veterinary use)
Apex Laboratories, Australia
- Tiracrin
Geymonat, Italy
- Tiroidine
Rudefsa, Mexico
- Tirosint
Amsa, Italy; IBSA, Switzerland
- Tiroxin
Metlen, Colombia
- Tivoral
Galenika, Serbia
- Unithroid
Watson, United States
International Drug Name Search
Glossary
| BAN | British Approved Name |
| BANM | British Approved Name (Modified) |
| DCF | Dénomination Commune Française |
| DCIT | Denominazione Comune Italiana |
| IS | Inofficial Synonym |
| JAN | Japanese Accepted Name |
| OS | Official Synonym |
| PH | Pharmacopoeia Name |
| SPC | Summary of Product Characteristics (UK) |
Click for further information on drug naming conventions and
International Nonproprietary Names.