What is the brand name for Losartan?
The brand name for Losartan is Cozaar.
PTCB TOP 200 · #8
Losartan
Cozaar
Losartan is the generic name for the brand-name drug Cozaar. It is an arb (angiotensin ii receptor blocker) used to treat hypertension. On the PTCE Top 200 drug list, Losartan ranks #8 and is one of the most frequently tested cardiovascular medications — commonly quizzed on its brand–generic pair, drug class, and key side effects.
| Generic name | Losartan |
|---|---|
| Brand name(s) | Cozaar |
| Drug class | ARB (angiotensin II receptor blocker) |
| Class group | Cardiovascular |
| Common use | hypertension |
| DEA schedule | Unscheduled |
| Availability | Prescription only (Rx) |
What is Losartan used for?
ARB for hypertension; also used to reduce stroke risk in some patients with LVH and to slow diabetic kidney disease progression in type 2 diabetes.
What drug class is Losartan?
Losartan is an ARB (angiotensin II receptor blocker) in the Cardiovascular group. Knowing the class is the fastest way to predict its uses, side effects, and the brand↔generic pairs the PTCE tests.
Common side effects of Losartan
- arrow_rightDizziness
- arrow_rightHyperkalemia
- arrow_rightFatigue
- arrow_rightUpper respiratory symptoms
- arrow_rightBack pain
Major interactions
- arrow_rightPotassium supplements/sparing diuretics ↑ hyperkalemia risk
- arrow_rightNSAIDs may reduce effect and worsen kidney function
- arrow_rightLithium levels may increase (toxicity risk)
- arrow_rightDual RAAS blockade (ACEi/aliskiren) ↑ kidney injury/hyperkalemia risk
Is Losartan a controlled substance?
No. Losartan is not a federally controlled substance (it is unscheduled by the DEA).
warning Boxed warning
BOXED WARNING: Fetal toxicity—discontinue as soon as pregnancy is detected.
How to remember Losartan (PTCE mnemonic)
COzaar COunters BP — lo-SARTAN = ARB. 'LO pressure, NO pregnancy', watch K+; cough-free ACE alternative.
lightbulb
PTCE exam tip
Losartan is an ARB (-sartan), often used when an ACE inhibitor's cough won't quit. It's the other half of the classic lisinopril-vs-losartan comparison.
Losartan FAQ
What is Losartan used for?
Losartan is used to treat hypertension. ARB for hypertension; also used to reduce stroke risk in some patients with LVH and to slow diabetic kidney disease progression in type 2 diabetes.
What drug class is Losartan?
Losartan is an ARB (angiotensin II receptor blocker) (Cardiovascular group).
Is Losartan a controlled substance?
No. Losartan is not a federally controlled substance (it is unscheduled by the DEA).
Study guides that cover Losartan
Free, in-depth guides to the patterns behind this drug — no app needed.
Drug suffix cheat sheetthe suffix that gives away this drug's class
How to memorize the Top 200 drugsa method for locking in brand↔generic pairs
edit_noteSig codes cheat sheetthe abbreviations on this drug's label
descriptionHow to read a prescriptionevery field on a prescription, decodedSee all PTCE study guides or browse the full Top 200 drug list.
Drill Losartan the way the PTCE asks it
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Related drugs in the Cardiovascular group
Last reviewed August 7, 2026. Educational use only — not medical advice. Verify clinical specifics with your pharmacist or a current label source such as DailyMed. RxReflex is not affiliated with or endorsed by the Pharmacy Technician Certification Board (PTCB).