In the US, Letrozole (letrozole systemic) is a member of the following drug classes: aromatase inhibitors, hormones/antineoplastics and is used to treat Breast Cancer, Breast Cancer - Adjuvant, Breast Cancer - Metastatic and Female Infertility.

US matches:

• Letrozole
• Letrozole and ribociclib

Scheme

Rec.INN

ATC (Anatomical Therapeutic Chemical Classification)

L02BG04

CAS registry number (Chemical Abstracts Service)

0112809-51-5

Chemical Formula

C17-H11-N5

Molecular Weight

285

Therapeutic Category

Antineoplastic agent: Nonsteroidal aromatase inhibitor

Chemical Name

Benzonitrile, 4,4'-(1H-1,2,4-triazol-1-ylmetylene)bis-

Foreign Names

• Letrozolum (Latin)
• Letrozol (German)
• Letrozole (French)
• Letrozol (Spanish)

Generic Names

• Letrozole (OS: USAN, BAN, JAN)
• CGS 20267 (Ciba-Geigy) (IS)
• Letrozole (PH: BP 2018, Ph. Eur. 9, USP 41)
• Letrozolum (PH: Ph. Eur. 9)

Brand Names

• Accord Letrozole
  Accord, South Africa
• ACH-Letrozole
  Accord Healthcare, Canada
• Aletro
  PHARMAGEN, Czech Republic; PHARMAGEN, Slovakia
• Antif
  AC Farma, Peru
• Apo-Letrozole
  Apotex, Australia; Apotex, Canada; Apotex, Hong Kong
• Aromed
  Faran SA, Greece; Proton Pharma, Greece
• Aromek
  Celon, Poland
• Avomit
  Pliva, Bosnia & Herzegowina; Pliva Hrvatska, Macedonia
• Bio-Letrozole
  Biomed Pharma, Canada
• Bretra
  Shin Poong, South Korea
• Calantha
  Benedetti & Co., Italy
• CCP-Letrozole
  CellChem Pharmaceuticals, Canada
• Celofem
  Celon, Georgia
• Cendalon
  Tuteur, Argentina
• Chemmart Letrozole
  Apotex, Australia
• Cipla-Letrozole
  Cipla Medpro, South Africa
• Clarzole
  Actavis, Slovakia; Actavis Group, Poland
• Cravetol
  Craveri, Argentina
• Dracenax
  Sandoz, Czech Republic; Sandoz, Philippines
• Elozora
  Teva Romania, Romania
• Emvia
  Algorithm, Lebanon
• Esmara
  Dong-A, South Korea
• Etruzil
  Egis, Bulgaria; Egis, Netherlands; Egis, Russian Federation; Egis, Slovakia; Egis Pharmaceuticals, Poland; Egis Pharmaceuticals, Romania; Egis Praha, Czech Republic; Rottendorf Pharma, Bulgaria; Synthon, Bulgaria; Synthon, Bulgaria; Synthon, Georgia
• Etruzil 2.5 mg
  Egis, Hungary
• Fada Letrozol
  Fada Pharma, Argentina
• Famos 2.5 mg
  Mensana, Hungary
• Fecinole
  Bio-Shar, Uruguay; Dosa, Argentina
• Femaplex
  Dipa, Indonesia; Genepharm, Greece; Genepharm, Macedonia; Genepharm, Tunisia
• Femar
  Novartis, Denmark; Novartis, Finland; Novartis, Norway; Novartis, Sweden; Novartis Healthcare A/S, Iceland
• Femara
  Beijing Novartis Pharma Co., Ltd., China; CIBA, Kuwait; Globalex, Estonia; Gramón Bagó, Uruguay; Novartis, Argentina; Novartis, Bosnia & Herzegowina; Novartis, Belgium; Novartis, Brazil; Novartis, Chile; Novartis, Colombia; Novartis, Czech Republic; Novartis, Ecuador; Novartis, Egypt; Novartis, Georgia; Novartis, Greece; Novartis, Hong Kong; Novartis, Croatia (Hrvatska); Novartis, Indonesia; Novartis, Ireland; Novartis, Israel; Novartis, Japan; Novartis, South Korea; Novartis, Lebanon; Novartis, Lithuania; Novartis, Latvia; Novartis, Macedonia; Novartis, Mexico; Novartis, Netherlands; Novartis, New Zealand; Novartis, Oman; Novartis, Pakistan; Novartis, Portugal; Novartis, Paraguay; Novartis, Slovakia; Novartis, Thailand; Novartis, Tunisia; Novartis, Turkey; Novartis, Taiwan; Novartis, United States; Novartis, Venezuela; Novartis AH, South Africa; Novartis Biosciences, Peru; Novartis Farma, Italy; Novartis Farmaceutica, Spain; Novartis Healthcare, Philippines; Novartis Pharma, Bulgaria; Novartis Pharma, Germany; Novartis Pharma, Romania; Novartis Pharma Services, Vietnam; Novartis PHarma Services Inc., Serbia; Novartis Pharmaceuticals, Australia; Novartis Pharmaceuticals, Canada; Novartis Pharmaceuticals, Cyprus; Novartis Pharmaceuticals, Malta; Novartis Pharmaceuticals UK, United Kingdom; Orifarm, Norway; Novartis Singapore, Singapore
• Fémara
  BB Farma, France; Mediwin, France; Novartis, France; Novartis, Tunisia; Pharma Lab, France
• Femara 2.5 mg
  Haemato Pharm, Austria; Novartis, Hungary; Novartis Pharma, Austria; Novartis Pharma, Switzerland
• Femara-2.5
  Novartis, Luxembourg
• Femazac
  Pharmazac SA, Greece
• Femolet
  Alphapharm, Australia
• Femozol
  Haupt Pharma, Israel; PharmaSwiss, Serbia
• Femtozone
  Helm, Lithuania; Helm, Slovenia
• Femzole
  Al Pharm, South Africa
• Feofer
  Alna, India
• Fera
  Aspen Pharmacare, Australia
• Florazole 2.5 mg
  Actavis, Hungary
• Fu Rui
  HengRui Medicine, China
• Galdar
  GP Pharm, Spain
• Gesamaf
  Pisa, Mexico
• Gesamaf Pisa
  Pisa, Colombia
• Gosuran
  Genetic, Italy
• Gynotril
  Eris Pharmaceutical, Australia; Eris Pharmaceuticals, Tunisia
• Hentrozole
  Jiangsu-Hengrui, Philippines
• Idelara
  Bioprofarma, Argentina
• Ingelet
  Ingerics, Argentina
• Jamp Letrozole
  Jamp Pharma, Canada
• Kebirzol
  Aspen, Argentina
• Kisqali Femara Co-Pack [+ Ribociclib]
  Novartis, United States
• Lametta
  Marti Farm, Croatia (Hrvatska); Vipharm, Macedonia; Vipharm, Poland
• Laradex
  Accord, South Africa
• Lebrest
  Siegfried Generics, Israel
• Leena
  Hi-Warble, Pakistan
• Lefftara
  Hikma, Tunisia
• Lenara
  Kwang Dong, South Korea
• Leoncon
  Pharmanel, Greece
• Lerana
  Heaton, Czech Republic
• Letara
  Cipla, Georgia; Douglas, New Zealand
• Letmam
  Novamed, Colombia
• Letmylan
  Generics, Czech Republic
• Letoripe
  Multicare, Philippines
• Letozis
  Akesiss, India
• Letraccord
  Teva, New Zealand
• Letrafem
  Ariti, Greece
• Letralan
  PharmaSwiss, Poland
• Letrasan
  Deva, Macedonia; Deva, Turkey; Deva Holding A.S., Bosnia & Herzegowina
• Letraxon
  Axxon, Poland
• Letraz
  Kalbe, Indonesia
• Letrezol Actavis
  Actavis, Tunisia
• Letrilan
  Belupo, Croatia (Hrvatska)
• Letroblock
  Dr. R. Pfleger Chemische Fabrik, Germany
• Letrofam 2,5 mg
  G.L. Pharma, Austria
• Letrofar
  Farmex, Croatia (Hrvatska)
• Letrofarm GP Pharm
  GP Pharm, Argentina
• Letrofem
  Hikma, Poland
• Letrofemin
  Tecnimede, Bulgaria
• Letroger
  Lannacher, Lithuania
• LetroHEXAL
  Hexal, Germany
• Letrokabi
  Fresenius, Turkey
• Letroks
  Biem, Turkey
• Letrol
  Intas, Peru; Kocak Farma, Turkey
• Letrolan
  Avansor Pharma, Finland
• Letrole
  Mylan, New Zealand
• Letromac
  Macleods, India
• Letromal
  Williams & Halls, Iceland
• Letroman
  Synthon, Netherlands
• Letromast
  Deva, Georgia
• Letromedac
  medac, Poland
• Letromyl
  Generics, Slovakia; Mylan, New Zealand
• Letropen
  Aenorasis, Greece
• Letrostar
  Synthon, Netherlands
• Letrovena
  Oncogenerica, Czech Republic; Vipharm S.A., Slovakia
• Letrovena 2.5 mg
  Oncogenerika, Hungary
• Letrovitae
  Galenicum, Peru; Galenicum Health Chile, Chile
• Letroz
  Juno Pharmaceuticals, Australia; Libra, Paraguay; Libra, Uruguay; Sun Pharma, Myanmar
• Letroza
  Khandelwal, Russian Federation
• Letrozin
  Meditrina, Greece; Meditrina, Netherlands
• Letrozol
  Perulab, Peru
• Letrozol - 1 A Pharma
  1 A Pharma, Germany
• Letrozol AbZ
  AbZ-Pharma, Germany
• Letrozol Accord
  Accord, Spain; Accord Healthcare, Germany; Accord Healthcare, Denmark; Accord Healthcare, Netherlands; Accord Healthcare, Norway; Accord Healthcare, Sweden
• Letrozol Accord 2,5 mg
  Accord Healthcare, Austria
• Letrozol Actavis
  Actavis, Portugal; Actavis, Sweden; Actavis Group, Iceland; Agmar, Croatia (Hrvatska); Aurobindo, Belgium; PUREN Pharma, Germany
• Letrozol Actavis 2,5 mg
  Actavis Group, Austria
• Letrozol Actavis 2.5 mg
  Actavis, Hungary
• Letrozol AL
  Aliud Pharma, Germany
• Letrozol Almus
  Almus, Spain
• Letrozol Alter
  Alter, Spain
• Letrozol Alvogen
  Alvogen Luxembourg, Romania
• Letrozol Amneal
  Amneal Pharma, Spain
• Letrozol Apotex
  Apotex, Czech Republic; Apotex, Spain; Apotex Nederland, Netherlands
• Letrozol Arcana 2,5 mg
  Arcana Arzneimittel, Austria
• Letrozol Aristo
  Aristo, Spain; Aristo Pharma, Germany
• Letrozol Aurobindo
  Aurobindo, Netherlands
• Letrozol Aurovitas
  Aurovitas, Spain
• Letrozol Axios
  Axios, Germany
• Letrozol Azevedos
  Azevedos, Portugal
• Letrozol beta
  Betapharm, Germany
• Letrozol Biotenk
  Biotenk, Argentina
• Letrozol Bluefish
  Bluefish, Spain; Bluefish, Netherlands; Bluefish Pharma, Germany; Bluefish Pharmaceuticals, Iceland
• Letrozol Bluefish 2,5 mg
  Bluefish Pharmaceuticals, Austria
• Letrozol Cadiasun
  Cadiasun, Spain; Cadiasun, Netherlands
• Letrozol Cinfa
  Cinfa, Spain
• Letrozol Combix
  Combix, Spain
• Letrozol Denk
  Denk, Germany; Denk, Netherlands
• Letrozol Devatis
  Devatis, Germany; Devatis, Netherlands
• Letrozol dura
  Mylan dura, Germany
• Letrozol Eurofarma
  Eurofarma, Brazil; Gautier, Uruguay
• Letrozol Fair-Med Healthcare
  Fair-Med Healthcare, Germany
• Letrozol Farmoz
  Farmoz, Portugal
• Letrozol Fresenius Kabi
  Fresenius Kabi Nederland, Netherlands
• Letrozol Genera
  Genera, Croatia (Hrvatska)
• Letrozol Genericon
  Genericon, Netherlands
• Letrozol Genericon 2,5 mg
  Genericon Pharma, Austria
• Letrozol Generis
  Generis, Portugal
• Letrozol Genthon
  Genthon, Netherlands
• Letrozol Germed
  Germed, Portugal
• Letrozol Glenmark
  Glenmark, Argentina; Glenmark, Germany; Glenmark, Netherlands
• Letrozol Helvepharm 2.5mg
  Helvepharm, Switzerland
• Letrozol Hetero
  Hetero Europe, Netherlands
• Letrozol Heumann
  Heumann, Germany
• Letrozol JGL
  Jadran Galenski, Croatia (Hrvatska)
• Letrozol Kabi
  Fresenius Kabi, Croatia (Hrvatska); Fresenius Kabi Oncology, Romania
• Letrozol Kern
  Kern Pharma, Spain
• Letrozol Labatec 2.5mg
  Labatec Pharma, Switzerland
• Letrozol Lafedar
  Lafedar, Argentina
• Letrozol Lambda
  Lambda, Netherlands
• Letrozol Lannacher
  Lannacher, Netherlands
• Letrozol Larjan
  Larjan, Uruguay
• Letrozol Lek
  LEK farmacevtska, Macedonia
• Letrozol Medical Valley
  Medical Valley, Sweden
• Letrozol Microsules
  Microsules Arg, Argentina
• Letrozol Mylan
  Mylan, Spain; Mylan, Netherlands; Mylan, Sweden
• Letrozol Normon
  Normon, Spain
• Letrozol Nucleus
  Synthon, Bulgaria; Synthon, Bulgaria
• Letrozol onkovis
  Onkovis, Germany
• Letrozol Orifarm
  Orifarm Generics, Norway
• Letrozol Orion
  Orion Pharma, Denmark; Orion Pharma, Sweden
• Letrozol Pensa
  Pensa Pharma, Spain
• Letrozol Phace 2.5 mg
  Phace, Hungary
• Letrozol Pharmacenter
  Pharmacenter, Netherlands
• Letrozol Pharmakern
  Pharmakern, Portugal
• Letrozol Puren
  PUREN Pharma, Germany
• Letrozol Ratiopharm
  Ratiopharm, Spain
• Letrozol ratiopharm 2,5 mg
  ratiopharm Arzneimittel, Austria
• Letrozol Sandoz
  Salutas Pharma, Serbia; Sandoz, Belgium; Sandoz, Croatia (Hrvatska); Sandoz, Netherlands; Sandoz, Portugal; Sandoz, Slovakia; Sandoz España, Spain
• Letrozol Sandoz 2.5mg
  Sandoz, Austria; Sandoz, Switzerland
• Letrozol Servycal
  Servycal, Uruguay
• Letrozol Stada
  STADA, Spain; STADA, Portugal; STADA, Romania; STADA Nordic, Denmark; STADA Nordic, Sweden
• Letrozol STADA
  STADA, Slovakia; Stada Arzneimittel, Germany
• Letrozol Stada 2,5 mg
  Stada Arzneimittel, Austria
• Letrozol SUN
  Sun Pharma, Netherlands; SUN Pharmaceuticals Germany, Germany
• Letrozol Synthon
  Synthon, Netherlands
• Letrozol Tarbis
  Tarbis, Spain
• Letrozol Techsphere
  Techsphere, Argentina
• Letrozol Tecnigen
  Tecnimede, Spain
• Letrozol Teva
  Pharmachemie, Netherlands; Teva, Denmark; Teva, Sweden; Teva Pharma, Portugal
• Letrozol Teva Pharma
  Teva, Czech Republic
• Letrozol Tevagen
  Teva, Spain
• Letrozol Varifarma
  Varifarma, Argentina; Varifarma, Paraguay
• Letrozol Vir
  Vir, Spain
• Letrozol Winthrop
  Zentiva Pharma, Germany
• Letrozol Zentiva
  Sanofi-Aventis, Spain
• Letrozol-biomo
  biomo pharma, Germany
• Letrozol-CT
  AbZ-Pharma, Germany
• Letrozole
  Accord Healthcare, United Kingdom; Accord Healthcare, United States; Actavis UK, United Kingdom; Apotex, United States; Denk, Georgia; Dr. Reddy's, United Kingdom; Dr. Reddy's, United States; Fresenius Kabi Oncology, United States; Generics Pharma, Greece; Hikma Maple, United States; Indicus, United States; Jiangsu Hengrui, United States; Mylan, Greece; Mylan, United States; Natco, United States; Sandoz GmbH, Greece; Specifar, Greece; Sun Pharma, United States; Teva, United States; Vintage, United States; West-Ward, United States; Zydus Pharma, United States
• Letrozole Accord
  Accord, Lithuania; Accord Healthcare, Estonia; Accord Healthcare, Malta; Accord Healthcare, Poland
• Létrozole Accord Healthcare
  Accord Healthcare, France
• Letrozole Acdima
  Acdima, Egypt
• Letrozole Actavis
  Actavis, Lithuania; Actavis Group, Cyprus; Actavis Group, Malta; Actavis Pharma, Canada; Medis Pharma, Australia
• Letrozole Alvogen
  Synthon, Bulgaria; Synthon, Bulgaria
• Letrozole AN
  Amneal Pharma, Australia
• Letrozole Apotex
  Apotex, Poland
• Létrozole Arrow
  Arrow, France
• Letrozole Azevedos
  Pharmacare, Malta
• Létrozole Biogaran
  Biogaran, France
• Letrozole Bluefish
  Bluefish Pharma, Sweden; Bluefish Pharmaceuticals, Poland
• Létrozole Bluefish
  Bluefish, France
• Letrozole Bluefish 2.5 mg
  Bluefish, Hungary
• Létrozole Cristers
  CristerS, France
• Letrozole Dexcel
  Haupt Pharma, Israel
• Letrozole EG
  Eurogenerics, Belgium
• Létrozole EG
  EG Labo, France
• Letrozole EG-2.5mg
  Eurogenerics, Luxembourg
• Létrozole Evolugen
  Evolupharm, France
• Letrozole Fair-Med Healthcare
  Fair-Med, Malta; Fair-Med, Poland
• Letrozole Farmoz
  West Pharma, Israel
• Letrozole FBM
  Southern Cross Pharma, Australia
• Letrozole Generichealth
  Generic Health, Australia
• Letrozole Genericon
  Genericon Pharma, Lithuania
• Letrozole Inovamed
  Synthon, Israel
• Letrozole Kabi
  Fresenius Kabi Oncology, Bulgaria
• Letrozole Kern Pharma
  Kern Pharma, Tunisia
• Letrozole MC Pharma
  MC Pharma, Bulgaria
• Letrozole Mediner 2.5 mg
  Mediner, Hungary
• Letrozole Mint
  Mint Health Limited, Malta
• Letrozole Mylan
  Gerard, Ireland
• Létrozole Mylan
  Mylan, France
• Letrozole Pharmacare
  Pharmacare, Malta
• Letrozole Pharmacenter
  Pharmacenter Slovakia, Slovakia
• Letrozole PharmaSwiss
  PharmaSwiss, Serbia
• Letrozole Polpharma
  Polpharma, Lithuania
• Letrozole Pro Doc
  Pro Doc, Canada
• Letrozole RBX
  Ranbaxy, Australia
• Letrozole Sandoz
  Sandoz, Australia; Sandoz, Sweden
• Létrozole Sandoz
  Sandoz, France
• Letrozole SanoSwiss
  SanoSwiss, Estonia; SanoSwiss, Lithuania; SanoSwiss UAB, Latvia
• Letrozole Teva
  Teva, Israel; Teva, Lithuania; Teva, Latvia; Teva Eesti, Estonia; Teva Pharma, Cyprus; Teva Pharma Belgium, Belgium
• Létrozole Teva
  Teva Santé, France
• Letrozole Teva 2.5 mg
  Teva, Hungary
• Létrozole Zentiva
  Sanofi-Aventis, France
• Létrozole Zydus
  Zydus, France
• Letrozole/Generics
  Generics Pharma Hellas, Cyprus
• Letrozole/Sanofi-Aventis
  Zentiva, Cyprus
• Letrozole-Humanity
  BDR Pharmaceuticals, Georgia
• Letrozol-HAEMATO
  HAEMATO PHARM, Germany
• Letrozol-Hormosan
  Hormosan Pharma, Germany
• Letrozol-Mepha 2.5 mg
  Mepha Pharma, Switzerland
• Letrozolo AHCL
  Accord Healthcare, Italy
• Letrozol-Ratiopharm
  Ratiopharm, Lithuania
• Letrozol-ratiopharm
  ratiopharm, Germany
• Letrozol-Teva 2.5mg
  Teva Pharma, Switzerland
• Letrozolum Genthon
  Genthon BV, Poland
• Letrozolum Polpharma
  Synthon, Georgia
• Letrozomax
  Lek, Bosnia & Herzegowina
• Letu
  Onko-Koçsel, Turkey
• Letzol
  SRS Pharmaceuticals PVT LTD, Myanmar
• Levetiracetam Heumann
  Heumann, Germany
• Lezol
  Intas, Philippines
• Lezra
  Actavis, Indonesia; Actavis Group, Romania; Actavis International, Vietnam; Pascual, Philippines; S.C. Sindan-Pharma, Macedonia; Zdravlje, Serbia
• Likarda
  Krka, Czech Republic; Krka, Lithuania; Krka, Latvia
• Loosyn
  Synthon, Bulgaria; Synthon, Bulgaria; Synthon, Romania
• Lortanda
  KRKA, Bulgaria; KRKA, Estonia; KRKA, Croatia (Hrvatska); KRKA, Macedonia; KRKA, Poland; KRKA, Romania; KRKA, Serbia; KRKA, Slovakia; TAD, Bulgaria
• Losiral
  CCL, Pakistan; Complex Therapeutics, Chile; Recalcine, Paraguay
• Lostar
  Polpharma, Poland
• Lotestrol
  Sanofi-Aventis SA, Greece
• Loxifan
  Laboratorios Dr. Esteve, Spain
• Loxoprel
  Actavis, Portugal
• Mar-Letrozole
  Marcan Pharmaceuticals, Canada
• MED-Letrozole
  Generic Medical Partners, Canada
• Mionic
  Gedeon Richter, Lithuania
• Nat-Letrozole
  Natco Pharma, Canada
• Nodutax
  Nafar, Mexico
• Oreta
  Dr. Reddy's, India
• Pharmacor Letrozole 2.5
  Pharmacor, Australia
• Picozette
  STADA, Estonia
• Picozone
  Stada, Lithuania
• Picozone 2.5 mg
  STADA, Hungary
• PMS-Letrozole
  Pharmascience, Canada; Pharmascience, Macedonia
• RAN-Letrozole
  Ranbaxy Pharmaceuticals Canada, Canada
• Ratroz
  Rafarm, Greece
• Religan
  Sieger Pharma, Greece
• Riva-Letrozole
  Laboratoire Riva, Canada
• Saderon
  Aegis, Cyprus
• Sandoz Letrozole
  Sandoz, Canada
• Siletris
  Cell Pharm, Serbia; Cell Pharma, Macedonia; Haupt Pharma Munster, Serbia; Hemofarm, Bosnia & Herzegowina; Stada, Croatia (Hrvatska); Stada, Serbia
• Stefaplex
  Opus Materia, Greece
• Symletrol
  SymPhar, Poland
• Terry White Chemists Letrozole
  Apotex, Australia
• Teva-Letrozole
  Teva Canada, Canada
• Tiadis
  Synthon Chile, Chile
• Trodis
  Nafar, Mexico
• Trotech
  BIOTECHNO PH, Argentina
• Trozara
  Actavis, Czech Republic
• Trozel
  Glenmark, Czech Republic; Glenmark, Lithuania; Glenmark, Poland; Glenmark, Romania
• Trozet
  Fresenius, Philippines; Fresenius, Taiwan; Fresenius Kabi, Thailand; Fresenius Kabi Oncology, Georgia
• Trozolt
  Brimpharm, South Africa
• VAN-Letrozole
  VANC Pharmaceuticals, Canada
• Veuen
  Eriochem, Argentina
• Viobrest
  Viogen, Greece
• Zequipra
  Neola Pharma, Romania; Tecnimede, Bulgaria
• Zinda-Letrozole
  Stason Pharmaceuticals, Canada
• Zolstro
  Accord Farma, Mexico

Glossary

Further information on drug naming conventions: International Nonproprietary Names.