Answer
Ondansetron can prolong the QT interval and rarely cause serious rhythm disturbances. Risk is higher with congenital long-QT syndrome, electrolyte abnormalities, cardiac disease or interacting medicines.
Sources for this answer
- Ondansetron 4 mg Orodispersible tablets — Current selected SmPCemc · Summary of Product Characteristics
- SETOFILM 4 mg Orodispersible Films — 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.