About propafenone hydrochloride
Class Ic antiarrhythmic
Used for
- Treats certain abnormal heart rhythms, including atrial fibrillation and ventricular arrhythmias.
Usual adult dose
Often started at 150 mg every 8 hours; a clinician may adjust the dose.
Common side effects
- Dizziness or tiredness
- Nausea or constipation
- Unusual taste
- Slow or irregular heartbeat
Important warnings
- Can cause or worsen serious abnormal heart rhythms.
- May worsen heart failure or affect heart conduction.
- Requires heart monitoring and careful dose adjustment.
- Do not stop suddenly without medical guidance.
Pregnancy
Use only when needed; pregnancy safety information is limited.
Breastfeeding
May enter breast milk; effects on nursing infants are uncertain.
Interactions
- Other medicines affecting heart rhythm can increase risk.
- May interact with warfarin, digoxin, and some beta blockers.
- Some antibiotics, antifungals, and antidepressants can raise propafenone levels.
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 It may be incomplete or out of date.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.