Sotalol
Betapace (sotalol) is a prescription antiarrhythmic medication used to treat life-threatening irregular heartbeats, particularly ventricular arrhythmias and atrial fibrillation/flutter. It belongs to a unique class of beta-blockers that also affect potassium channels in the heart to help maintain normal rhythm. This medication is typically initiated in a hospital setting due to the risk of serious heart rhythm disturbances.
Betapace is an antiarrhythmic medication used to treat dangerous irregular heartbeats like ventricular arrhythmias and atrial fibrillation.
Key facts at a glance
- RxNorm
- 224909
- Generic
- Betapace
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Betapace is used to treat symptomatic ventricular arrhythmias and to maintain normal heart rhythm in patients with atrial fibrillation or atrial flutter.
Betapace works by blocking both beta-adrenergic receptors and potassium channels in the heart, which helps slow the heart rate and stabilize irregular electrical activity.
Betapace can cause new or worsening arrhythmias and should be started in a hospital with continuous heart monitoring. It may interact with other medications and is not suitable for patients with certain heart conditions such as severe heart failure, slow heart rate, or low potassium levels. Regular monitoring of kidney function and heart rhythm is necessary during treatment.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed September 3, 2026. · Read our editorial policy