TheraRadar
Data updated: May 26, 2026

COZAAR (losartan potassium)

Cardiovascular Approved 1995-04-14

Cozaar helps adults and children over six years old manage high blood pressure, which reduces the risk of serious cardiovascular events like strokes and heart attacks. It is also used to lower the risk of stroke in hypertensive patients who have left ventricular hypertrophy, though this specific benefit may not apply to Black patients. Additionally, the medication treats kidney disease in patients with type 2 diabetes and high blood pressure who show signs of protein in their urine or elevated creatinine levels.

Source: FDA Label • Merck

How COZAAR Works

This medication works by blocking the binding of angiotensin II, a hormone that causes blood vessels to narrow and triggers the release of salt-retaining hormones. By selectively targeting the AT1 receptor, the drug and its active metabolite prevent vasoconstriction and reduce aldosterone secretion. This process helps relax blood vessels and lower blood pressure without affecting the enzymes that regulate other cardiovascular proteins.

5
Indications
--
Phase 3 Trials
2
Priority Reviews
31
Years on Market

Details

Status
Prescription
First Approved
1995-04-14
Revenue
$315M (Q4-2012)

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Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: LOSARTAN POTASSIUM

COZAAR Approval History

1996
1997
1998
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2005
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2011
2012
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2015
2016
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2026
Original
New Indication
New Form
Label Update
153 FDA actions from 1995 to 2025 · 4 indication expansions
Jun 2025 SUPPL
Label · Labeling
Oct 2021 SUPPL
Label · Labeling
Oct 2018 SUPPL
Label · Labeling

What COZAAR Treats

6 indications

COZAAR is approved for 6 conditions since its original approval in 1995. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Hypertension
  • Stroke
  • Left Ventricular Hypertrophy
  • Diabetic Nephropathy
  • Type 2 Diabetes
  • Proteinuria
Source: FDA Label

COZAAR Boxed Warning

FETAL TOXICITY When pregnancy is detected, discontinue COZAAR as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus [see Warnings and Precautions (5.1) ] . WARNING: FETAL TOXICITY See full prescribing information for complete boxed warning. When pregnancy is detected, discontinue COZAAR as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus. ( 5.1 )...

COZAAR Competitive Set

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Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to COZAAR

3 of 20

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

ARBLI
LOSARTAN POTASSIUM
3 shared
SCIENTURE
Shared indications:
HypertensionLeft Ventricular HypertrophyDiabetic Nephropathy
CADUET
AMLODIPINE BESYLATE
3 shared
PHARMACIA
Shared indications:
HYZAAR
HYDROCHLOROTHIAZIDE
3 shared
Merck
Shared indications:
HypertensionStrokeLeft Ventricular Hypertrophy
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Clinical Trial Registry

13 trials
Trial Sponsor ID Phase Status Title
NCT04106856 SHAPER HCI121104 NCI-2019-05882, HCI121104 Ph 1 active not recruiting Losartan and Hypofractionated Rx After Chemo for Tx of Borderline Resectable or Locally Advanced Pancreatic Cancer (SHAPER)
NCT07547878 RAPID-CKD 026-271 Ph 4 not yet recruiting Rapid and Simultaneous Initiation of Four Guideline-Directed CKD Therapies (RAPID-CKD)
NCT04539808 results posted STUDY00021614 NCI-2020-06277, STUDY00021614 Ph 2 active not recruiting NeoOPTIMIZE: Early Switching of mFOLFIRINOX or Gemcitabine/Nab-Paclitaxel Before Surgery for the Treatment of Resectable, Borderline Resectable, or Locally-Advanced Unresectable Pancreatic Cancer
NCT05402397 HGNPE 7122 Ph 4 completed Losartan and Uric Acid Metabolism in Children With Proteinuric Nephropathies
NCT00756938 results posted 0954-337 2008_545, CTRI/2009/091/000045 Ph 3 completed Study of Losartan in Pediatric Patients With Hypertension (MK-0954-337)
NCT00496834 results posted 0954-330 2007_015 Ph 4 completed LAAS (Losartan Anti-Atherosclerosis Study)(0954-330)(COMPLETED)
NCT03467217 STOP-NAFLD results posted 9 STOP-NAFLD U01DK061730 Ph 2 terminated Losartan for the Treatment of Pediatric NAFLD
NCT01808196 results posted 2012-0106 Ph 2 completed Testing Effectiveness of Losartan in Patients With EoE With or Without a CTD
NCT03029091 results posted 2015-9021 U54AI117804 Ph 2 completed An Open-Label Trial of Losartan Potassium in Participants With Eosinophilic Esophagitis (EoE)
NCT04222686 CARE-PLP CARE-PLP Ph 4 completed Evaluation of Losartan and Perindopril in Blacks Type 2 Diabetics Patients
NCT01302691 results posted 0954E-357 Ph 3 completed MK-0954E Study in Participants With Hypertension (MK-0954E-357)
NCT01234922 results posted IRB00014933 NCI-2010-02043, IRB00014933 Ph 2 terminated Benazepril Hydrochloride, Lisinopril, Ramipril, or Losartan Potassium in Treating Hypertension in Patients With Solid Tumors
NCT00949884 results posted CS0866-A-U452 Ph 4 completed Olmesartan Comparison to Losartan in Hypertensive Subjects
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Active Pipeline

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Key Completed Trials

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

COZAAR FDA Label Details

Indications & Usage

FDA Label (PDF)

COZAAR is indicated for the treatment of Hypertension; Stroke; Left Ventricular Hypertrophy; Diabetic Nephropathy; Type 2 Diabetes; Proteinuria.

⚠️ BOXED WARNING

WARNING: FETAL TOXICITY When pregnancy is detected, discontinue COZAAR as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus [see Warnings and Precautions (5.1) ] . WARNING: FETAL TOXICITY See full prescribing information for ...

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Revenue Insights

  • Q4-2012: $315M
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Patent Timeline

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  • Generic/biosimilar risk

Trial Analysis

  • Clinical trial tracking
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Competitive Landscape

  • 20 similar drugs
  • Same target/indication analysis
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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.