thyroid hormone
Levothyroxine
Compensates for a lack of thyroid hormones (hypothyroidism). This molecule appears in 216 of the medicines we have indexed.
Do you need a supplement? No.
No supplement is warranted with this treatment. A varied diet remains the foundation.
Do you also take another treatment?
By the Layer Nutrition editorial teamHow the atlas classifies the 664 molecules
- Class
- thyroid hormone
- Indexed medicines
- 216
- Our answer
- Nothing to add
- Updated
- October 2026
What this medicine is for
Pharmacologically, this molecule belongs to the “thyroid hormone” category. This treatment supplies the thyroid hormone that the gland no longer produces in sufficient amount. Its dosage is fine-tuned and checked by a blood test (TSH).
In practice: Compensates for a lack of thyroid hormones (hypothyroidism). It is most often a long-term treatment, taken at regular times over long periods; its benefit is judged over time, not by how you feel on a given day.
The name on your box may be here.
These names come from the public registers of 32 countries: the ANSM for France, the AEMPS for Spain, the AIFA for Italy, the HPRA for Ireland, Swissmedic for Switzerland, and the European Medicines Agency for the others.
Most widespread
- LEVOTHYROX
- EUTHYROX
- L-THYROXIN HENNING
- ELTROXIN
- THYROFIX
- TIROSINT
- MEDITHYROX
- ACCU-THYROX
- L-THYROXIN BERLIN-CHEMIE
- LETROX
- TIROSINTSOL
- EUTIROX
No name matches.
See all names, country by countryHide the list by country
France6
- L-THYROXIN HENNING
- L-THYROXINE SERB
- LEVOTHYROX
- TCAPS
- THYROFIX
- EUTHYRAL
Germany37
- EFEROX
- EUTHYROX
- L-THYROX
- LEVOHELM
- TIROSINT
- JODTHYROX
- NOVOTHYRAL
- PROTHYRID
- THEVIER
- THYRONAJOD
- EFEROX LÖSUNG ZUM EINNEHMEN
- L-THYROXIN
- L-THYROXIN AL
- L-THYROXIN ARISTO
- L-THYROXIN AVENTIS
- L-THYROXIN BC
- L-THYROXIN BETA
- L-THYROXIN HENNING
- L-THYROXIN INJECT HENNING
- L-THYROXIN LEVOTHYROXIN-NATRIUM AVENTIS
- L-THYROXIN LEVOTHYROXIN-NATRIUM HENNING
- L-THYROXIN-NA
- L-THYROXIN-NA ABZ
- L-THYROXIN-NA CT
- L-THYROXIN-NA RATIOPHARM
- L-THYROXIN SERB
- L-THYROXIN TROPFEN
- L-THYROXIN WINTHROP
- L-THYROXIN ZENTIVA
- TIROSINT SOL
- EFEROX JOD
- EFEROX JOD ARISTO
- L-THYROXIN JOD ARISTO
- L-THYROXIN JOD WINTHROP
- L-THYROXIN PLUS HENNING
- LEVOTHYROXIN ABDI
- LEVOTHYROXINE SODIUM 1 A PHARMA
Spain5
- EUTIROX
- THYROFIX
- LEVOTIROXINA ARISTO
- LEVOTIROXINA SANOFI
- LEVOTIROXINA SODICA TEVA
Italy8
- EUTIROX
- LEVOTIRSOL
- TICHE
- TIFACTOR
- TIROSINT
- SOMATOLINE
- LEVOTIROXINA ABDI
- LEVOTIROXINA DOC
United Kingdom23
- ELTROXIN
- TERISTON
- THYROXINE
- VENCAMIL
- LEVOTHYROXINE
- LEVOTHYROXINE ACCORD-UK
- LEVOTHYROXINE ADVANZ PHARMA GENERICS
- LEVOTHYROXINE ARISTO
- LEVOTHYROXINE BCM
- LEVOTHYROXINE GLENMARK PHARMACEUTICALS EUROPE
- LEVOTHYROXINE IBSA
- LEVOTHYROXINE MERCURY PHARMA GROUP
- LEVOTHYROXINE MERCURY PHARMACEUTICALS
- LEVOTHYROXINE MERCURY PHARMACEUTICALS LTD.
- LEVOTHYROXINE NORTHUMBRIA PHARMA
- LEVOTHYROXINE SERB
- LEVOTHYROXINE SUN PHARMA UK
- LEVOTHYROXINE SYRI
- LEVOTHYROXINE TEVA UK
- LEVOTHYROXINE WOCKHARDT UK
- LEVOTHYROXINE ZENTIVA
- LEVOTHYROXINE ZENTIVA PHARMA
- LEVOTHYROXINE ZYDUS
Ireland7
- ELTROXIN
- OROXINE
- LEVOTHYROXINE
- LEVOTHYROXINE SODIUM
- LEVOTHYROXINE SODIUM ARISTO
- LEVOTHYROXINE SODIUM ROWEX
- LEVOTHYROXINE TEVA
Switzerland4
- ELTROXIN-LF
- EUTHYROX
- TIROSINT
- NOVOTHYRAL
Austria9
- EUTHYROX
- L-THYROXIN SERB
- LEVOHELM
- SYNTROXINE
- THYREX
- JODTHYROX
- NOVOTHYRAL
- SYNTROXINE SOL
- LEVOTHYROXIN ARISTO
Belgium2
- EUTHYROX
- L-THYROXINE CHRISTIAENS
Bulgaria3
- ЕУТИРОКС
- ACCU-THYROX
- L-ТИРОКСИН БЕРЛИН-ХЕМИ
Cyprus4
- ACCU-THYROX
- EUTHYROX
- T4
- THYROFIX
Croatia2
- EUTHYROX
- LETROX
Denmark7
- ELTROXIN
- EUTHYROX
- MEDITHYROX
- STRIROXIN
- TIROSINT
- TIROSINTSOL
- LEVOTHYROXINNATRIUM "SERB"
Estonia1
- L-THYROXIN BERLIN-CHEMIE
Finland6
- MEDITHYROX
- STRIROXIN
- THYROXIN ORION CORPORATION
- LEVOTHYROXINE ORION
- LEVOTHYROXINE SANDOZ
- LEVOTHYROXINE SERB
Greece11
- ACCU-THYROX
- EUTHYROX
- IZIFET
- LEVO-4
- MEDITHYROX
- T4
- THYRO-4
- THYROHORMONE
- TIROSINT
- TIROSOL®
- DITHYRON
Hungary5
- EUTHYROX
- L-THYROXIN HENNING
- LETROX
- SYNOTIREX
- SYNTROXINE
Iceland3
- EUTHYROX
- LEVAXIN
- THYROFIX
Latvia4
- EUTHYROX
- L-THYROXIN BERLIN-CHEMIE
- LEVOTHYROXINE SODIUM BERLIN-CHEMIE
- LEVOTHYROXINE SODIUM UNIFARMA
Lithuania3
- L-THYROXIN BERLIN-CHEMIE
- LEVOTHYROXINE SODIUM
- LEVOTHYROXINE SODIUM ACCORD
Luxembourg5
- EUTHYROX
- L-THYROXINE
- JODTHYROX
- NOVOTHYRAL
- L-THYROXINE CHRISTIAENS
Malta6
- ELTROXIN
- T4
- THYROFIX
- T4 UNI-PHARMA KLEON TSETIS PHARMACEUTICAL
- LEVOTHYROXINE MERCURY PHARMA GROUP
- LEVOTHYROXINE SODIUM RENATA PHARMACEUTICALS
Norway5
- EUTHYROX
- LEVAXIN
- LEVOTYROKSINNATRIUM SANDOZ
- TIROSINTSOL
- LEVOTHYROXINE SODIUM SERB
Netherlands13
- ELTROXIN
- EUTHYROX
- THYRAX DUOTAB
- THYROFIX
- TIROSINT
- TIROSINT SOL
- LEVOTHYROXINE ABDI
- LEVOTHYROXINE ACCORD
- LEVOTHYROXINE NATRIUM UNI-PHARMA
- LEVOTHYROXINE NYCOMED
- LEVOTHYROXINE SERB
- LEVOTHYROXINENATRIUM ARISTO
- LEVOTHYROXINENATRIUM TEVA
Poland8
- ALTHYXIN
- EFEROX
- ELTROXIN
- EUTHYROX N
- LETROX
- MEDITHYROX
- TIROSINT SOL
- NOVOTHYRAL
Portugal7
- EUTIROX
- LETTER
- THYROFIX
- LEVOTIROXINA
- LEVOTIROXINA ABDI
- LEVOTIROXINA ARISTO
- LEVOTIROXINA SÓDICA RATIOPHARM
Romania3
- ACCU-THYROX
- EUTHYROX
- NOVOTHYRAL
Slovakia5
- EUTHYROX
- L-THYROXIN
- TIROSINT
- L-THYROXIN BERLIN-CHEMIE
- TIROSINTSOL
Slovenia2
- ELTROXIN
- EUTHYROX
Sweden6
- EUTHYROX
- LEVAXIN
- MEDITHYROX
- STRIROXIN
- TIROSINTSOL
- LEVOTHYROXINE SERB
Czechia6
- ALTHYXIN
- EUTHYROX
- LETROX
- SYNOTIREX
- SYNTROXINE
- LEVOTHYROXINE ARISTO
One answer out of three.
The atlas gives each molecule one of these three answers. Most call for nothing.
- Our formula31 molecules
- An active ingredient to consider59 molecules
- Nothing to add574 moleculesincluding this one
Do you also take another treatment?
Type the name written on the box. The atlas gives you its answer.
For example Panadol, Doliprane or paracetamol.