ondansetron · Medicine question

Can ondansetron affect heart rhythm?

iatroX medicinesPublished 21 August 2026Reviewed 21 August 2026

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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.

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Ondansetron 4 mg Orodispersible tabletsemc · SmPC Current selected SmPC · Version 1
SETOFILM 4 mg Orodispersible Filmsemc · SmPC Current selected SmPC · Version 7

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