About ibutilide
Class III antiarrhythmic
Used for
- Rapid conversion of recent-onset atrial fibrillation or atrial flutter to normal rhythm
Usual adult dose
Adults weighing 60 kg or more: 1 mg intravenously over 10 minutes; may repeat once after 10 minutes. Below 60 kg: 0.01 mg/kg per dose, repeated once if needed.
Common side effects
- Abnormal heart rhythms, including torsades de pointes
- Slow heart rate
- Low blood pressure
- Headache or nausea
Important warnings
- Can cause life-threatening abnormal rhythms; continuous heart monitoring is required during treatment and afterward.
- Correct low potassium or magnesium before treatment.
- Avoid with prolonged QT interval or a history of torsades de pointes.
- Use caution with heart failure or medicines that prolong the QT interval.
Pregnancy
Use only when clearly needed; human pregnancy information is limited.
Breastfeeding
It is unknown whether ibutilide passes into breast milk; breastfeeding safety is not established.
Interactions
- Other medicines that prolong the QT interval may increase the risk of dangerous heart rhythms.
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 It may be incomplete or out of date.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.