About sotalol hcl
Class III antiarrhythmic and beta blocker
Used for
- Treats certain abnormal heart rhythms, including atrial fibrillation and ventricular arrhythmias.
Usual adult dose
Often starts at 80 mg twice daily; dose is adjusted using heart rhythm and kidney function.
Usual dose in children
Specialist dosing by weight and heart-rhythm monitoring; no single usual dose.
Common side effects
- Slow heartbeat, dizziness, or fatigue
- Shortness of breath
- Nausea
- Potentially dangerous irregular heartbeat
Important warnings
- Can prolong the QT interval and cause life-threatening arrhythmias.
- Requires heart rhythm, kidney function, and electrolyte monitoring.
- Do not stop suddenly without medical supervision.
- Dose depends on kidney function; avoid in certain heart or breathing conditions.
Pregnancy
Use only when clearly needed; it may affect the fetus and requires clinician assessment.
Breastfeeding
Sotalol passes into breast milk and may accumulate in infants; discuss alternatives with a clinician.
Interactions
- Other QT-prolonging medicines increase arrhythmia risk.
- Verapamil, diltiazem, or digoxin can further slow the heartbeat.
- Antacids containing aluminum or magnesium can reduce absorption; separate doses.
- Diuretics that lower potassium or magnesium increase arrhythmia risk.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.