Who are LETROZOLE's main competitors?

Direct comparators (same drug class / molecular target / therapeutic area): Kisqali, Aromasin, Femara, Arimidex, ANASTROZOLE, Teolit.

How often does this brief refresh?

Every 30 minutes from primary sources (FDA, EMA, MHRA, PMDA, ClinicalTrials.gov, USPTO). Subscribe to the RSS feed below for push alerts.

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Last reviewed 2026-06-10 · How we verify

LETROZOLE — Competitive Intelligence Brief

Name: Drug Landscape Pharmaceutical Database
Creator: Drug Landscape
Published: 2026-01-01
License: https://creativecommons.org/licenses/by/4.0/

LETROZOLE (LETROZOLE) competitive landscape: 6 comparators, recent regulatory actions, upcoming PDUFA, patent timeline. Class: Aromatase Inhibitor [EPC].

marketed Aromatase Inhibitor [EPC] Small molecule Live · refreshed every 30 min

Target snapshot

LETROZOLE (LETROZOLE).

Comparator set (6 drugs)

Auto-detected by same drug class / molecular target / therapeutic area, ranked by phase + recency. Override with ?vs=slug1,slug2,….

Drug	Generic	Sponsor	Phase	Class	Target	Approval / PDUFA
LETROZOLE TARGET	LETROZOLE		marketed	Aromatase Inhibitor [EPC]		1997-01-01
Kisqali	ribociclib	Novartis	marketed	CDK4/6 inhibitor; aromatase inhibitor	Cyclin-dependent kinase (CDK) 4 and 6; aromatase enzyme	2017-01-01
Aromasin	exemestane	Pfizer	marketed	Aromatase Inhibitor [EPC]	Aromatase	1999-01-01
Femara	letrozole	Novartis AG	marketed	Aromatase Inhibitor [EPC]	aromatase enzyme	1997-07-25
Arimidex	anastrozole	AstraZeneca	marketed	Aromatase inhibitor	Aromatase enzyme	1995-12-27
ANASTROZOLE	ANASTROZOLE		marketed	Aromatase Inhibitor [EPC]	aromatase	1995-01-01
Teolit	TESTOLACTONE		marketed	Aromatase Inhibitor	Aromatase	1969-01-01

Recent regulatory actions (last 90 days)

No regulatory actions in the last 90 days for this set.

Upcoming PDUFA dates (next 180 days)

No PDUFA dates in the next 180 days for this set.

Patent timeline (forward window)

No upcoming patent expiries for this set.

Sponsor landscape (Aromatase Inhibitor [EPC] class)

· 2 drugs in this class
Al-Azhar University · 1 drug in this class
Novartis AG · 1 drug in this class
Pfizer · 1 drug in this class

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Cite this brief

Drug Landscape (2026). LETROZOLE — Competitive Intelligence Brief. https://druglandscape.com/ci/chembl-chembl1444. Accessed 2026-06-10.

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Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing