Answer
Yes. It can prolong the QT interval and has rarely been linked to serious arrhythmias, especially with electrolyte abnormalities, heart disease or other QT-prolonging medicines.
Sources for this answer
- VFEND and Voriconazole 40 mg/ml powder for oral suspension — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.