Amiodarone and Levofloxacin: Drug Interaction Guide
Quick answer: This is a major interaction — avoid combining Amiodarone and Levofloxacin unless specifically directed by your doctor.
How Amiodarone interacts with Levofloxacin
Both drugs prolong cardiac repolarization by effects on cardiac potassium currents, increasing the risk of QT prolongation and torsades de pointes. Risk is higher with hypokalaemia, bradycardia, or structural heart disease.
What you should do
Avoid co-prescribing where possible. If no alternative exists, correct electrolytes, obtain baseline and follow-up ECGs, and monitor for arrhythmia symptoms.
Key facts
Severity
Major — avoid combination
Mechanism
Both drugs prolong cardiac repolarization by effects on cardiac potassium currents, increasing the risk of QT prolongati...
Action
Avoid co-prescribing where possible. If no alternative exists, correct electrolytes, obtain baseline and follow-up ECGs,...
Frequently asked questions
Can I take Amiodarone and Levofloxacin together?
No — this combination should generally be avoided. Avoid co-prescribing where possible. If no alternative exists, correct electrolytes, obtain baseline and follow-up ECGs, and monitor for arrhythmia symptoms.
What is the severity of this interaction?
The interaction between Amiodarone and Levofloxacin is classified as Major — avoid combination. Both drugs prolong cardiac repolarization by effects on cardiac potassium currents, increasing the risk of QT prolongation and torsades de pointes. Risk is higher with hypokalaemia, bradycardia, or structural heart disease.
What should I do if I'm prescribed both?
Avoid co-prescribing where possible. If no alternative exists, correct electrolytes, obtain baseline and follow-up ECGs, and monitor for arrhythmia symptoms. Always consult your prescribing clinician — do not stop or change medications without medical guidance.
Last reviewed: by iMedic Medical Editorial Team. Our editorial process.