ondansetron · Medicine question

How common is headache as a side effect of ondansetron?

iatroX medicinesPublished 8 November 2026

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Headache is a very common side effect of ondansetron, affecting at least 1 in 10 people at standard recommended doses according to indication and formulation.

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SETOFILM 4 mg Orodispersible FilmsNorgine Limited · emc · SmPC §4.8 Undesirable effects · Version 7Document updated 3 June 2025

Sources checked 8 November 2026

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