Drug interactions
Granisetron + Sumatriptan intranasal
Severity: Minor
Granisetron and Sumatriptan intranasal: 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
Serotonin syndrome has been reported with triptans and 5-HT3 antagonists, although cases are rare and the causal link is uncertain. Both are commonly used together for migraine-related nausea, and most patients tolerate this without problems.
What this interaction means in plain words
Granisetron and Sumatriptan intranasal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Theoretical additive serotonergic effect; not well established.
What to do
The combination can generally be used; advise the patient to seek care for agitation, tremor, fever or sweating. Stop both if serotonin syndrome is suspected.
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 Granisetron and Sumatriptan intranasal, 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 7 days on the web. No card needed.
Other interactions of Granisetron
- Apomorphine + Granisetron Contraindicated
- Amiodarone + Granisetron Major
- Amisulpride + Granisetron Major
- Arsenic trioxide + Granisetron Major
- Artemether / lumefantrine + Granisetron Major
- Artemether + Granisetron Major
Frequently asked questions
Can I take Granisetron with Sumatriptan intranasal?
MediHelp rates the interaction as minor. Granisetron and Sumatriptan intranasal have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Serotonin syndrome has been reported with triptans and 5-HT3 antagonists, although cases are rare and the causal link is uncertain. Both are commonly used together for migraine-related nausea, and most patients tolerate this without problems.
How serious is the interaction between Granisetron and Sumatriptan intranasal?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: The combination can generally be used; advise the patient to seek care for agitation, tremor, fever or sweating. Stop both if serotonin syndrome is suspected.
What other medicines interact with Granisetron?
MediHelp also lists interactions of Granisetron with, for example, Apomorphine, Amiodarone, Amisulpride. The full list is on the Granisetron 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.
