Losartan vs. Carvedilol

See how Losartan and Carvedilol compare on approved uses, dosing, side effects, and cost.

Key Takeaways

  • Losartan is an ARB taken once daily for blood pressure and kidney protection, while carvedilol is a beta-blocker used for blood pressure, heart failure, and recovery after a heart attack.

  • Carvedilol needs a slow twice-daily titration and causes more dizziness and fatigue, while losartan starts at an effective dose with once-daily dosing.

  • Only carvedilol has FDA approval for heart failure and reducing death after a heart attack; only losartan is approved to slow diabetic kidney disease.

Losartan vs. Carvedilol Drug Summary

Losartan

Losartan is an angiotensin II receptor blocker (ARB) used to treat high blood pressure, lower stroke risk in people with hypertension and thickened heart muscle, and slow kidney damage from type 2 diabetes. It comes as a tablet taken once a day, usually starting at 50 mg.

Carvedilol

Carvedilol is a combined alpha- and beta-blocker used to treat high blood pressure, chronic heart failure, and heart damage after a heart attack. It is taken twice a day with food, starting at a low dose that is slowly increased over several weeks.

Losartan vs. Carvedilol Side Effects

Losartan

Most common
Upper respiratory infection (up to 8%)
Dizziness (up to 3%)
Nasal congestion (up to 2%)
Back pain (up to 2%)

Carvedilol

Most common
Dizziness (up to 32%)
Fatigue (up to 24%)
Hypotension (up to 14%)
Diarrhea (up to 12%)

Losartan vs. Carvedilol Dosage

Losartan

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 25 mg once daily At the start
Maximum dose 100 mg once daily If needed
Dose changes 2 increases As tolerated

Carvedilol

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 3.125 mg twice daily At the start
Maximum dose 25 mg twice daily If needed
Dose changes 3 increases As tolerated

Losartan vs. Carvedilol Indications

Losartan

Losartan is FDA-approved to treat high blood pressure in adults and children over age 6. It also reduces stroke risk in people with hypertension and left ventricular hypertrophy, and slows kidney disease in people with type 2 diabetes and proteinuria.

  • Treats high blood pressure in adults and children over 6

  • Lowers stroke risk with hypertension and thickened heart muscle

  • Slows kidney damage in type 2 diabetes with proteinuria

  • Stroke-risk benefit not established in Black patients

Carvedilol

Carvedilol is FDA-approved to treat chronic heart failure, from mild to severe, and to lower the chance of death after a heart attack in people with reduced heart pumping function. It is also approved to treat high blood pressure, alone or combined with other medications.

  • Treats mild to severe chronic heart failure

  • Lowers death risk after a heart attack with weak heart function

  • Treats high blood pressure, alone or with other drugs

  • Sometimes used off-label for atrial fibrillation rate control

Losartan vs. Carvedilol Pros and Cons

Losartan

Losartan offers simple once-daily dosing without a lengthy titration schedule, and it doesn't cause the dry cough sometimes seen with ACE inhibitors. As a generic ARB, it's inexpensive and widely stocked at pharmacies, though it isn't approved for heart failure.

Pros

  • Once-daily dosing with no lengthy titration needed

  • Does not cause the dry cough linked to ACE inhibitors

  • Also slows kidney damage in diabetic nephropathy

  • Inexpensive, widely available generic

Cons

  • Not FDA-approved for heart failure

  • Carries a pregnancy boxed warning for fetal harm

  • Needs periodic blood tests for potassium and kidney function

  • Stroke-prevention benefit not established in Black patients

Carvedilol

Carvedilol has proven mortality benefits in heart failure and after a heart attack, benefits losartan does not offer. It requires a gradual twice-daily titration over weeks and carries higher rates of dizziness, fatigue, and low blood pressure during that adjustment period.

Pros

  • Proven to reduce deaths in heart failure and post-heart attack

  • Also effective for high blood pressure

  • Can be combined with diuretics or other antihypertensives

  • Also available as once-daily extended-release capsule (Coreg CR)

Cons

  • Requires slow twice-daily titration over several weeks

  • Higher rates of dizziness, fatigue, and low blood pressure

  • Should not be stopped abruptly due to rebound risk

  • Not recommended for patients with asthma or bronchospasm

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