Levothyroxine (International)

Note: 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:

Scheme

BAN

CAS registry number (Chemical Abstracts Service)

0000051-48-9

Chemical Formula

C15-H10-I4-N-O4

Molecular Weight

776

Therapeutic Categories

Thyroid hormone

Hormone replacement therapy (HRT)

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)
L-Thyroxine (IS)
Thyroxine (IS)
Thyroxinum laevogirum (IS)
Thyroxinum (PH: Ph. Helv. VI)
Lévothyroxine sodique (OS: DCF)
Levothyroxine Sodium (OS: BANM)
Levotiroxina sodica (OS: DCIT)
Thyroxin-Natrium (IS)
Thyroxinum natricum (IS)
Lévothyroxine sodique (PH: Ph. Eur. 9)
Levothyroxine Sodium (PH: BP 2018, Ph. Int. 7, USP 41)
Levothyroxine sodium (PH: Ph. Eur. 9)
Levothyroxin-Natrium (PH: Ph. Eur. 9)
Levothyroxinum natricum (PH: Ph. Eur. 9, Ph. Int. 7)
Levothyroxine Sodium Hydrate (OS: JAN)
UNII-9J765S329G (IS)
Lévothyroxine sodique (PH: Ph. Eur. 9)
Levothyroxine sodium (PH: Ph. Eur. 9, Ph. Int. 4)
Levothyroxine Sodium Hydrate (PH: JP XVII)
Levothyroxinnatrium (PH: Ph. Eur. 9)
Levothyroxinum natricum (PH: Ph. Eur. 9)

Brand Names

Berlthyrox
Berlin-Chemie, Tunisia; Menarini, Lebanon
Bitiron [+ Liothyronine]
Abdi Ibrahim, Turkey
Dermocinetic [+ Escin]
Geymonat, Italy
Eltroxin
Glaxo Smithkline, Lebanon; GlaxoSmithKline, Egypt
Euthycin
Incepta, Bangladesh
Euthyrox
Merck, Egypt; Merck Kgaa, Lebanon
Leutiral
Silanes, Mexico
Lévothyrox
Merck Santé, Tunisia
Levothyroxin Stada 100 μg
Stada Arzneimittel, Austria
Levothyroxin Stada 125 μg
Stada Arzneimittel, Austria
Levothyroxin Stada 150 μg
Stada Arzneimittel, Austria
Levothyroxin Stada 175 μg
Stada Arzneimittel, Austria
Levothyroxin Stada 200 μg
Stada Arzneimittel, Austria
Levothyroxin Stada 50 μg
Stada Arzneimittel, Austria
Levothyroxin Stada 75 μg
Stada Arzneimittel, Austria
Levotiron
Abdi Ibrahim, Turkey
L-Thyroxin Henning
Organon, Latvia
Novothyral [+ Liothyronine]
Sanolabor, Slovenia
Somatoline [+ Escin]
Manetti Roberts, Italy
T4 Pharma Arte
Pharma Arte, Paraguay
T4 Thyro
MUP, Egypt
T4-Bago 150
Bago, Peru
Thiroyd
Greater Pharma, Thailand
Thyro-4
Angelini, Tunisia
Thyroid-S
Sriprasit Pharma, Thailand
Thyrox
Renata, Bangladesh
Tiroidina [+ Liothyronine]
Dispert, Uruguay
Tirosint
IBSA Farmaceutici Italia, Italy
Tiroxin
Metlen, Ecuador
Tyraxin
Memphis Co., Egypt
Accu-Thyrox
Galenica, Romania
Accu-thyrox 100mcg
Galenica, Bulgaria
Accu-thyrox 25mcg
Galenica, Bulgaria
Accu-thyrox 50mcg
Galenica, Bulgaria
Aliasint
IBSA Farmaceutici Italia, Italy
Boncheck
Bonapharm, Peru
Cynocuatro
Valeant Grossman, Mexico
Cynoplus [+ Liothyronine]
Valeant Grossman, Mexico
Dexnon
Kern Pharma, Spain
Diotroxin [+ Liothyronine]
Pharmacare, South Africa
Dobesium
Pharmacheck, Peru
Eferox
Aristo Pharma, Germany
Eltroxin
Alfred Gera, Malta; Aspen, Czech Republic; Aspen, Lithuania; Aspen, New Zealand; Aspen, Philippines; Aspen, Poland; Aspen Nordic, Denmark; Aspen Pharmacare, Australia; Aspen Pharmacare, Canada; Aspen Pharmacare/Menarini, Singapore; Concordia, United Kingdom; Glaxo Wellcome, Lithuania; GlaxoSmithKline, Bangladesh; GlaxoSmithKline, India; GlaxoSmithKline, Kuwait; GlaxoSmithKline, Taiwan; GlaxoSmithKline, South Africa; Mercury, Malta
Eltroxin 100mcg
Aspen, Israel
Eltroxin 50mcg
Aspen, Israel; Aspen Pharma, Oman
Eltroxin/Levothyroxine
Alfred Gera, Malta
Eltroxin/Thyroxine
Mercury, Malta
Eltroxin-LF 0.05mg
Alfasigma, Switzerland
Eltroxin-LF 0.1mg
Alfasigma, Switzerland
Eurolev
Renata, Philippines
Euthyral [+ Liothyronine]
Merck Serono, France
Euthyrox
BModesto, Netherlands; Dr. Fisher Farma, Netherlands; Elea, Argentina; Eureco-Pharma, Netherlands; Euro Registratie, Netherlands; Merck, Bosnia & Herzegowina; Merck, Brazil; Merck, Czech Republic; Merck, Denmark; Merck, Georgia; Merck, Greece; Merck, Croatia (Hrvatska); Merck, Indonesia; Merck, Norway; Merck, Philippines; Merck, Serbia; Merck, Sweden; Merck, Slovakia; Merck, Turkey; Merck, Venezuela; Merck A E Hellas, Cyprus; Merck Consumer Healthcare, Belgium; Merck Healthcare, Netherlands; Merck KGaA, Iceland; Merck KGaA, Macedonia; Merck KGaA, Romania; Merck Sereno, Latvia; Merck Serono, China; Merck Serono, Germany; Merck Serono, Malaysia; Merck Serono, Russian Federation; Merck Serono, South Africa; Merck Merck Serono Division, Singapore
Euthyrox 100
Merck, Switzerland; Merck, Lithuania
Euthyrox 100 µg
Merck, Austria; Merck, Bulgaria; Merck, Hungary; Merck KGaA, Oman
Euthyrox 100mcg
Merck, Luxembourg; Merck Serono Ltd, Israel
Euthyrox 112 µg
Merck, Austria
Euthyrox 125
Merck, Switzerland
Euthyrox 125 µg
Merck, Austria; Merck, Bulgaria; Merck, Hungary
Euthyrox 125mcg
Merck, Luxembourg
Euthyrox 137 µg
Merck, Austria
Euthyrox 150
Merck, Switzerland
Euthyrox 150 µg
Merck, Austria; Merck, Hungary; Merck KGaA, Oman
Euthyrox 150mcg
Merck, Luxembourg
Euthyrox 175
Merck, Switzerland
Euthyrox 175 µg
Merck, Austria; Merck, Hungary
Euthyrox 175mcg
Merck, Luxembourg
Euthyrox 200
Merck, Switzerland
Euthyrox 200 µg
Merck, Austria
Euthyrox 200mcg
Merck, Luxembourg
Euthyrox 25
Merck, Switzerland
Euthyrox 25 µg
Merck, Austria; Merck, Bulgaria; Merck KGaA, Oman
Euthyrox 25mcg
Merck, Luxembourg
Euthyrox 50
Merck, Switzerland
Euthyrox 50 µg
Merck, Austria; Merck, Bulgaria; Merck, Hungary; Merck KGaA, Oman
Euthyrox 50mcg
Merck, Luxembourg; Merck Serono Ltd, Israel
Euthyrox 75
Merck, Switzerland
Euthyrox 75 µg
Merck, Austria; Merck, Bulgaria; Merck, Hungary
Euthyrox 75mcg
Merck, Luxembourg
Euthyrox 88 µg
Merck, Austria
Euthyrox N
Merck, Poland
Eutirox
Bracco, Italy; Merck, Chile; Merck, Colombia; Merck, Ecuador; Merck, Mexico; Merck, Peru; Merck, Portugal; Merck S.L., Spain
Eutroxsig
Aspen Pharmacare, Australia
Forthyron [veterinary use]
Albrecht, Germany; Dechra, Norway; Eurovet Animal Health, Belgium; Eurovet Animal Health BV, United Kingdom; Selectavet, Germany
Forthyron 200 µg für Hunde [veterinary use]
Eurovet Animal Health, Austria
Forthyron 200 microgram voor honden [veterinary use]
Eurovet Animal Health, Netherlands
Forthyron 200 mikrogramow dla psow For dogs [veterinary use]
Eurovet Animal Health, Poland
Forthyron 400 µg für Hunde [veterinary use]
Eurovet Animal Health, Austria
Forthyron 400 microgram voor honden [veterinary use]
Eurovet Animal Health, Netherlands
Forthyron 400 mikrogramow dla psow For dogs [veterinary use]
Eurovet Animal Health, Poland
Forthyron 600 microgram voor honden [veterinary use]
Eurovet Animal Health, Netherlands
Forthyron 600 mikrogramow dla psow For dogs [veterinary use]
Eurovet Animal Health, Poland
Forthyron 800 microgram voor honden [veterinary use]
Eurovet Animal Health, Netherlands
Forthyron 800 mikrogramow dla psow For dogs [veterinary use]
Eurovet Animal Health, Poland
Forthyron F M pour chiens [veterinary use]
Dechra Veterinary Products, France
Forthyron F S pour chiens [veterinary use]
Dechra Veterinary Products, France
Forthyron F XL pour chiens [veterinary use]
Dechra Veterinary Products, France
Forthyron Smak [veterinary use]
Dechra, Finland; Dechra, Sweden
Goldshield Levothyroxine
Goldshield Pharmaceuticals, Hong Kong
Jaroxin
Jayson, Bangladesh
Jodthyrox [+ Potassium Iodide]
Merck, Austria; Merck, Czech Republic; Merck, Poland; Merck Serono, Germany
Karet
Armstrong Laboratorios de Mexico, Mexico
L Thyroxine SERB
SERB Laboratoires, France
Letrox
Berlin Chemie, Bosnia & Herzegowina; Berlin-Chemie, China; Berlin-Chemie, Czech Republic; Berlin-Chemie, Croatia (Hrvatska); Berlin-Chemie, Macedonia; Berlin-Chemie/ Menarini, Poland
Letrox 100
Berlin-Chemie, Serbia
Letrox 100 µg
Berlin-Chemie, Hungary
Letrox 125 µg
Berlin-Chemie, Hungary
Letrox 150
Berlin-Chemie, Serbia
Letrox 50
Berlin-Chemie, Serbia
Letrox 50 µg
Berlin-Chemie, Hungary
Letrox 75 µg
Berlin-Chemie, Hungary
Letter
Sanofi, Portugal
Levaxin
Sanolabor, Slovenia; Takeda, Norway; Takeda Pharma, Sweden; Takeda Pharma A/S, Iceland
Leventa [veterinary use]
Intervet, Belgium; Intervet, United Kingdom; Intervet, Netherlands; Intervet, Sweden; Intervet Ireland, Ireland; MSD, New Zealand; MSD Animal Health, Switzerland; MSD Santé Animale Intervet, France
Levo-4
Rafarm, Greece
Levoid
Aché, Brazil
Levolet
Hamad, Bahrain
Levothyrox
Merck KGaA, Vietnam; Merck Serono, France
Levothyroxine
Actavis, Indonesia; Actavis UK, United Kingdom; Actavis UK, Malta; APP, Hong Kong; Boucher & Muir, New Zealand; Colonis Pharma, United Kingdom; Concordia, United Kingdom; Jensonr Plus, United Kingdom; Teva, Malta; Wockhardt UK, United Kingdom
Levothyroxine - ZhongLian Pharm
ZhongLian Pharm, China
Levothyroxine Actavis
Actavis, Hong Kong
Lévothyroxine Biogaran
Biogaran, France
Levothyroxine Mercury Pharma
Mercury, Malta
Levothyroxine natrium Uni-Pharma
Uni-Pharma, Netherlands
Levothyroxine P & D
P & D, Malta
Levothyroxine Sodium
EMD Serono, United States; Fresenius Kabi, United States; Mylan, United States; Par Pharmaceutical, United States
Levothyroxine Sodium Fresenius Kabi
Fresenius Kabi Canada, Canada
Levothyroxine Sodium Vale
Vale Pharmaceuticals, Poland
Levothyroxine Teva
Teva Pharmaceuticals, Poland
Levothyroxine Wockhardt
Wockhardt, Malta
Levothyroxine-Humanity
Par, Georgia
Levothyroxinenatrium Teva
Teva Nederland, Netherlands
Levotiroteg
Laboratorio Tecnoquímicas, Guatemala; Laboratorio Tecnoquímicas, Honduras; Laboratorio Tecnoquímicas, El Salvador
Levotirox Lafedar
Lafedar, Argentina
Levotiroxina
ADN Pharma, Mexico
Levotiroxina Fabra 100
Fabra, Argentina
Levotiroxina GlaxoSmithKline
GlaxoSmithKline, Paraguay
Levo-tiroxina GlaxoSmithKline
GlaxoSmithKline, Argentina
Levotiroxina MK
MK, Colombia
Levotiroxina Norpharm
Norpharm, Italy
Levotiroxina Sanofi
Sanofi-Aventis, Spain
Levotiroxina Sodica 100 Gramon Bago
Gramón Bagó, Uruguay
Levotiroxina Sodica 150 Gramon Bago
Gramón Bagó, Uruguay
Levotiroxina Sodica 50 Gramon Bago
Gramón Bagó, Uruguay
Levotiroxina Sodica Andromaco
Laboratorios Andromaco, Chile
Levotiroxina Sodica L.CH.
Chile S.A., Paraguay; Laboratorio Chile, Chile
Levotiroxina Sódica Merck
Merck, Brazil
Levotiroxina Sodica Ratiopharm
Ratiopharm, Spain
Levotiroxina Sódica Ratiopharm
Ratiopharm, Portugal
Levotiroxina Sodica Teva
Teva, Spain
Levoxyl
King Pharmaceuticals, United States
L-Thyrox HEXAL
Hexal, Germany
L-Thyrox Jod HEXAL [+ Potassium Iodide]
Hexal, Germany
L-Thyroxin - 1 A Pharma
1 A Pharma, Germany
L-Thyroxin 100 Berlin-Chemie
Berlin-Chemie AG, Bulgaria
L-Thyroxin 150 Berlin-Chemie
Berlin-Chemie AG, Bulgaria
L-Thyroxin 50 Berlin-Chemie
Berlin-Chemie AG, Bulgaria
L-Thyroxin 75 Berlin-Chemie
Berlin-Chemie AG, Bulgaria
L-Thyroxin AL
Aliud Pharma, Germany
L-Thyroxin Aristo
Aristo Pharma, Germany
L-Thyroxin Aventis
Sanofi, Germany
L-Thyroxin Berlin
Berlin-Chemie, Latvia
L-Thyroxin Berlin-Chemie
Berlin-Chemie, Estonia; Berlin-Chemie, Georgia; Berlin-Chemie, Lithuania; Berlin-Chemie, Slovakia
L-Thyroxin beta
Betapharm, Germany
L-Thyroxin Henning
Henning Berlin, Germany; LENIS, Slovenia
L-Thyroxin Henning 100
Henning Berlin, Germany
L-Thyroxin Henning 100 µg
Sanofi-Aventis, Hungary
L-Thyroxin Henning 100 plus [+ Potassium Iodide]
Henning Berlin, Germany
L-Thyroxin Henning 125
Henning Berlin, Germany
L-Thyroxin Henning 150
Henning Berlin, Germany
L-Thyroxin Henning 175
Henning Berlin, Germany
L-Thyroxin Henning 200
Henning Berlin, Germany
L-Thyroxin Henning 25
Henning Berlin, Germany
L-Thyroxin Henning 50
Henning Berlin, Germany
L-Thyroxin Henning 50 µg
Sanofi-Aventis, Hungary
L-Thyroxin Henning 50 plus [+ Potassium Iodide]
Henning Berlin, Germany
L-Thyroxin Henning 75
Henning Berlin, Germany
L-Thyroxin Jod - 1A-Pharma [+ Potassium Iodide]
1 A Pharma, Germany
L-Thyroxin Jod Winthrop [+ Potassium Iodide]
Zentiva Pharma, Germany
L-Thyroxin Winthrop
Zentiva Pharma, Germany
L-Thyroxin-CT
AbZ-Pharma, Germany
L-Thyroxine
Takeda Belgium, Belgium; IFET, Greece
L-Thyroxine [veterinary use]
Aesculaap, Netherlands
L-Thyroxine Sandoz
Sandoz, Lithuania
L-Thyroxine SERB
SERB Laboratoires, France
L-Thyroxin-Na AbZ
AbZ-Pharma, Germany
L-Thyroxin-Na-CT
AbZ-Pharma, Germany
L-Thyroxin-Na-ratiopharm
ratiopharm, Germany
Medithyrox
Intermed, Greece
Mercury Pharma Levothyroxine
Mercury Pharma, Hong Kong
Nei Zhang Qing [+ Liothyronine]
Wujing Medicine, China
Novothyral [+ Liothyronine]
Merck, Austria; Merck, Switzerland; Merck, Chile; Merck, Poland; Merck, Slovakia; Merck KGaA, Romania
Novothyral 100 [+ Liothyronine]
Merck, Luxembourg; Merck Serono, Germany
Novothyral 75 [+ Liothyronine]
Merck, Luxembourg; Merck Serono, Germany
Novotiral [+ Liothyronine]
Merck, Mexico
Novtirox
Aspen Pharma, Slovenia
Oroxin
Aspen, Ireland
Oroxine
Aspen, Malaysia; Aspen Pharmacare, Australia
Prothyrid [+ Liothyronine]
Henning Berlin, Germany; Sanofi, Germany
Puran T4
Sanofi-Aventis Farmaceutica, Brazil
RO
Milefar, Uruguay
Soloxine [veterinary use]
Virbac France, United Kingdom; Virbac S.A., Ireland
Synthroid
Abbott, Colombia; Abbott, South Africa; Abbott Laboratorios do Brasil, Brazil; AbbVie, United States; Mylan, New Zealand
Synthroid 100mcg
Abbvie, Israel
Synthroid 50mcg
Abbvie, Israel
Synthyroxine
Dalim, South Korea
Syntroxine
IBSA, Czech Republic
Syntroxine 100 µg
IBSA, Hungary
Syntroxine 112 µg
IBSA, Hungary
Syntroxine 125 µg
IBSA, Hungary
Syntroxine 13 µg
IBSA, Hungary
Syntroxine 137 µg
IBSA, Hungary
Syntroxine 150 µg
IBSA, Hungary
Syntroxine 175 µg
IBSA, Hungary
Syntroxine 200 µg
IBSA, Hungary
Syntroxine 25 µg
IBSA, Hungary
Syntroxine 50 µg
IBSA, Hungary
Syntroxine 75 µg
IBSA, Hungary
Syntroxine 88 µg
IBSA, Hungary
T4
Uni-Pharma Kleon Isetis, Cyprus
T4 Bago
Bago, Paraguay
T4 Montpellier
Montpellier, Argentina
T4 Montpellier 100
Montpellier, Argentina
T4 Montpellier 112
Montpellier, Argentina
T4 Montpellier 125
Montpellier, Argentina
T4 Montpellier 137
Montpellier, Argentina
T4 Montpellier 150
Montpellier, Argentina
T4 Montpellier 175
Montpellier, Argentina
T4 Montpellier 200
Montpellier, Argentina
T4 Montpellier 25
Montpellier, Argentina
T4 Montpellier 50
Montpellier, Argentina
T4 Montpellier 75
Montpellier, Argentina
T4 Montpellier 88
Montpellier, Argentina
T4 Pharmetica
Pharmetica, Paraguay
T4-Bago
Laboratorio Bago, Chile; Bago, Peru
Tamidan
Actavis International, Vietnam
Tecuatro 100mcg
Dispert, Uruguay
Tecuatro 125mcg
Dispert, Uruguay
Tecuatro 150mcg
Dispert, Uruguay
Tecuatro 200mcg
Dispert, Uruguay
Tecuatro 25mcg
Dispert, Uruguay
Tecuatro 50mcg
Dispert, Uruguay
Tecuatro 75mcg
Dispert, Uruguay
Tefor
VLD, Turkey
TevaThyrox
Teva, Bulgaria
Tezarin
World Medicine, Georgia
Thevier
Aspen Pharma Trading Limited, Netherlands
Thevier 100
Aspen Pharma, Germany
Thydin
MedChoice, Philippines
Thyforon [veterinary use]
Eurovet Animal Health, Ireland; Eurovet Animal Health BV, United Kingdom
Thynor
Eskayef, Bangladesh
Thyrax
Aspen, Philippines; Aspen, Portugal; Organon, Venezuela; Quamed, Indonesia
Thyrax Duotab
Aspen Pharma Trading Limited, Netherlands
Thyrex 100 µg
Sandoz, Austria
Thyrex 125 µg
Sandoz, Austria
Thyrex 160 µg
Sandoz, Austria
Thyrex 25 µg
Sandoz, Austria
Thyrex 50 µg
Sandoz, Austria
Thyrex 75 µg
Sandoz, Austria
Thyrin
Square, Bangladesh
Thyro Canine [veterinary use]
Lloyd, United States
Thyro-4
Angelini Pharma, Greece; Faran Laboratories, Greece
Thyrobest
Bestochem, India
Thyrocare
Olcare Laboratories, India
Thyrofix
Uni-Pharma, Netherlands
Thyrohormone
Ni-The, Greece
Thyrolar
Acme, Bangladesh
Thyrolar [+ Liothyronine]
Forest, United States
Thyromac 0.1
Macleods Pharm, Peru
Thyronajod 100 Henning [+ Potassium Iodide]
Henning Berlin, Germany; Sanofi, Germany
Thyronajod 125 Henning [+ Potassium Iodide]
Henning Berlin, Germany; Sanofi, Germany
Thyronajod 150 Henning [+ Potassium Iodide]
Henning Berlin, Germany; Sanofi, Germany
Thyronajod 50 Henning [+ Potassium Iodide]
Henning Berlin, Germany; Sanofi, Germany
Thyronajod 75 Henning [+ Potassium Iodide]
Henning Berlin, Germany; Sanofi, Germany
Thyronorm
Abbott, India
Thyrorich
Primus, India
Thyrosit
Sriprasit Pharma, Thailand
Thyrotab
Ibn Sina, Bangladesh
Thyrowin
AHPL, India
Thyroxal 200 microgram voor honden en katten [veterinary use]
AST, Netherlands
Thyroxal 600 [veterinary use]
AST, Netherlands
Thyroxanil [veterinary use]
Le Vet Pharma B.V., United Kingdom; Vetcare, Finland
Thyroxanil 200μg für Hunde und Katzen For dogs and cats [veterinary use]
Le Vet, Austria
Thyroxanil 600μg für Hunde und Katzen For dogs and cats [veterinary use]
Le Vet, Austria
Thyroxanil L voor honden en katten [veterinary use]
Le Vet, Netherlands
Thyroxanil S voor honden en katten [veterinary use]
Le Vet, Netherlands
Thyroxantil vet [veterinary use]
Le Vet, Estonia; Le Vet, Iceland
Thyroxin
Orion Pharma, Finland
Thyroxine Actavis
Actavis, Hong Kong
Thyroxine for Dogs and Cats [veterinary use]
Apex Laboratories, Australia
Thyroxine Oral for Dogs [veterinary use]
Apex Laboratories, Australia
Thyroxine-Lam Thong
Lam Thong, Thailand
Tiracrin
Geymonat, Italy
Tiroide Amsa [+ Liothyronine]
AMSA, Italy
Tiroidine
Sanofi-Aventis, Mexico
Tirosint
AMSA, Italy; IBSA, Slovakia; IBSA, United States; IBSA Farmaceutici Italia Srl., Greece; IBSA Scandinavia, Denmark; Proton Pharma, Greece
Tirosint 100mcg
IBSA, Switzerland
Tirosint 112mcg
IBSA, Switzerland
Tirosint 125mcg
IBSA, Switzerland
Tirosint 137mcg
IBSA, Switzerland
Tirosint 13mcg
IBSA, Switzerland
Tirosint 150mcg
IBSA, Switzerland
Tirosint 175mcg
IBSA, Switzerland
Tirosint 200mcg
IBSA, Switzerland
Tirosint 25mcg
IBSA, Switzerland
Tirosint 50mcg
IBSA, Switzerland
Tirosint 75mcg
IBSA, Switzerland
Tirosint 88mcg
IBSA, Switzerland
Tiroxin
Siegfried, Colombia
Tivoral
Galenika, Bosnia & Herzegowina; Galenika AD, Serbia
Tyroid
ACI, Bangladesh
Unithroid
Jerome Stevens Pharmaceuticals, United States
Wethyrox [veterinary use]
WDT, Germany
Wolarex
Teva Pharmaceuticals, Poland
You Xian
Kangpu Pharmaceutical, China
Ze Ning
Sichuan Hairong Pharmaceutical Co., Ltd, China
Eferox Jod [+ Potassium Iodide]
Aristo Pharma, Germany
Eltroxin
Aspen Oss, Netherlands
Leventa [veterinary use]
MSD, Germany; MSD Animal Health, Italy; Selectavet, Germany
Levothyroxine CF
Centrafarm, Netherlands
Levothyroxine Na Sandoz
Sandoz, Japan
Levothyroxine Nycomed
Takeda Nederland, Netherlands
Levothyroxine Sodium
Fera Pharmaceuticals, United States
Levothyroxine Stada
STADA Nordic, Sweden
L-Thyroxin Henning 75 plus [+ Potassium Iodide]
Henning Berlin, Germany
L-Thyroxin Jod Aristo [+ Potassium Iodide]
Aristo Pharma, Germany
L-Thyroxine-Christiaens 100mcg
Takeda, Luxembourg
L-Thyroxine-Christiaens 125mcg
Takeda, Luxembourg
L-Thyroxine-Christiaens 150mcg
Takeda, Luxembourg
L-Thyroxine-Christiaens 175mcg
Takeda, Luxembourg
L-Thyroxine-Christiaens 200mcg
Takeda, Luxembourg
L-Thyroxine-Christiaens 25mcg
Takeda, Luxembourg
L-Thyroxine-Christiaens 50mcg
Takeda, Luxembourg
L-Thyroxine-Christiaens 75mcg
Takeda, Luxembourg
Oroxine
Aspen, Sweden
Synthroid
BGP Pharma, Canada
Thevier 50
Aspen Pharma, Germany
Thyradin S
ASKA Seiyaku Asuka, Japan
Thyradin S 0.01%
ASKA Seiyaku Asuka, Japan
Thyrofix
Uni-Pharma, Sweden
Tirosint
IBSA, Netherlands

Glossary

Term	Definition
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

Further information on drug naming conventions: International Nonproprietary Names.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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