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FDA Orange Book ยท active-ingredient family

Letrozole

Letrozole: 1 brand, 20 generics; first approved Jul 25, 1997; generic available.

Generic availableHas discontinued products
Generic status & protection

Generic available: 20 ANDA applications approved.

Brands (NDA)
1
Generics (ANDA)
20
Listed patents
0
Presentations
21

Brand (NDA) products

Originator applications
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  • FEMARARLDRS
    NDA 0207261997
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALRxAB

Generic (ANDA) products (20)

Abbreviated applications
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  • LETROZOLE
    ANDA 2117172019
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALRxAB
  • LETROZOLE
    ANDA 2058692018
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALRxAB
  • LETROZOLE
    ANDA 2037962016
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 2020482014
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 2027162013
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0913032012
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0902922011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0909342011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALRxAB
  • LETROZOLE
    ANDA 0911912011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALRxAB
  • LETROZOLE
    ANDA 0904912011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0908382011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0916382011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 2018042011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0910982011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 2001612011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALRxAB
  • LETROZOLE
    ANDA 0907892011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0914662011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0901962011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-
  • LETROZOLE
    ANDA 0902892011
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALRxAB
  • LETROZOLE
    ANDA 0781902008
    Approved strengths under this FDA application.
    StrengthDosage formRouteStatusTE
    2.5MGTABLETORALDiscontinued-

Listed patents

Orange Book patent file

No patents are listed against this product in the Orange Book. Listed patents reflect those the NDA holder submits under 21 U.S.C. 355 and are not exhaustive.

Approval history

FDA approval span
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First approval
29 yr 8 mo ago
Most recent approval
7 yr 11 mo ago

Approvals span 1997โ€“2019 across 21 FDA applications.

Brand (NDA) 15%
Generic (ANDA) 2095%

Letrozole: frequently asked questions

Generics, reference-listed drug, patents, and exclusivity for this active ingredient, from the FDA Orange Book.

Built directly from the FDA Orange Book data file (products, patents, and exclusivity). TE codes, RLD/RS flags, patent expirations, and exclusivity dates match the official FDA record. Listed patents reflect those the NDA holder submits under 21 U.S.C. 355 and are not exhaustive.

Related FDA reference tools

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