Atenolol vs. Carvedilol

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

Key Takeaways

  • Atenolol treats hypertension, angina, and stable heart attacks, while carvedilol also treats chronic heart failure and improves survival after a heart attack with reduced heart function.

  • Atenolol is taken once a day, while carvedilol is taken twice a day with food and needs a slower, multi-step dose increase.

  • Both drugs can cause dizziness and fatigue, but carvedilol carries a higher risk of low blood pressure, especially when standing up.

Atenolol vs. Carvedilol Drug Summary

Atenolol

Atenolol is a beta-1 selective beta-blocker used to lower blood pressure, treat angina, and manage stable heart attacks. It works by blocking beta-1 receptors in the heart to slow heart rate and reduce the heart's workload. It is taken as a tablet 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 to reduce the risk of death after a heart attack with weakened heart function. It blocks beta-1, beta-2, and alpha-1 receptors to lower blood pressure and ease strain on the heart. It is taken as a tablet twice a day with food, starting at a low dose that is slowly increased.

Atenolol vs. Carvedilol Side Effects

Atenolol

Most common
fatigue (up to 26%)
dizziness (up to 13%)
depression (up to 12%)
cold extremities (up to 12%)

Carvedilol

Most common
fatigue (up to 24%)
dizziness (up to 32%)
hypotension (up to 14%)
diarrhea (up to 12%)

Atenolol vs. Carvedilol Dosage

Atenolol

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 50 mg once daily At the start
Maximum dose 200 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

Atenolol vs. Carvedilol Indications

Atenolol

Atenolol is FDA-approved for high blood pressure, angina, and stable heart attacks. It is sometimes used off-label for other conditions, but it is not approved for heart failure.

  • Hypertension

  • Angina pectoris

  • Acute myocardial infarction (hemodynamically stable)

  • Off-label: migraine prevention and tremor

Carvedilol

Carvedilol is FDA-approved for high blood pressure, chronic heart failure, and left ventricular dysfunction after a heart attack. It is often added to other heart failure medications like diuretics and ACE inhibitors.

  • Essential hypertension

  • Chronic heart failure (ischemic or cardiomyopathic)

  • Left ventricular dysfunction following a heart attack

  • Often combined with diuretics or ACE inhibitors

Atenolol vs. Carvedilol Pros and Cons

Atenolol

Atenolol is a widely used, inexpensive beta-blocker with decades of clinical experience for hypertension and angina. It is not approved for heart failure and requires caution in kidney disease because it is cleared by the kidneys.

Pros

  • Once-daily dosing, no titration schedule to remember

  • Beta-1 selective, so less likely to affect the lungs

  • Long track record of use since 1981

  • One of the least expensive beta-blockers available

Cons

  • Not FDA-approved for heart failure

  • Requires dose adjustment in kidney disease

  • Contraindicated in bradycardia and higher-degree heart block

  • Can mask signs of low blood sugar or an overactive thyroid

Carvedilol

Carvedilol's added alpha-blocking effect gives it a broader label that includes heart failure and improved survival after a heart attack, uses atenolol does not have. That broader reach comes with a twice-daily schedule and a slower, multi-step dose increase.

Pros

  • FDA-approved for heart failure, not just blood pressure

  • Shown to reduce cardiovascular deaths after a heart attack

  • Extra alpha-1 blocking effect adds another way to lower blood pressure

  • Can be used alongside heart failure medications like diuretics

Cons

  • Must be taken twice a day instead of once

  • Must be taken with food to reduce dizziness on standing

  • More titration steps before reaching a maintenance dose

  • Higher rate of dizziness and low blood pressure on standing

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