Drug interactions
Ondansetron + Tazemetostat
Severity: Minor
Ondansetron and Tazemetostat: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Tazemetostat is a weak to moderate CYP3A4 inducer and may lower ondansetron levels. The effect on antiemetic efficacy is expected to be small.
What this interaction means in plain words
Ondansetron and Tazemetostat have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Ondansetron belongs to Gastrointestinal Tract; Tazemetostat belongs to Miscellaneous.
Why it happens
CYP3A4 induction by tazemetostat increases ondansetron metabolism.
What to do
No dose adjustment is routinely required. Assess antiemetic control and adjust if inadequate.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Ondansetron and Tazemetostat, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Ondansetron
- Apomorphine + Ondansetron Contraindicated
- Ondansetron + Thioridazine Contraindicated
- Ondansetron + Vandetanib Contraindicated
- Adagrasib + Ondansetron Major
- Amiodarone + Ondansetron Major
- Amisulpride + Ondansetron Major
Other interactions of Tazemetostat
Frequently asked questions
Can I take Ondansetron with Tazemetostat?
MediHelp rates the interaction as minor. Ondansetron and Tazemetostat have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tazemetostat is a weak to moderate CYP3A4 inducer and may lower ondansetron levels. The effect on antiemetic efficacy is expected to be small.
How serious is the interaction between Ondansetron and Tazemetostat?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is routinely required. Assess antiemetic control and adjust if inadequate.
What other medicines interact with Ondansetron?
MediHelp also lists interactions of Ondansetron with, for example, Apomorphine, Thioridazine, Vandetanib. The full list is on the Ondansetron page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
