Drug interactions
Pimavanserin + Sumatriptan intranasal
Severity: Minor
Pimavanserin 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
Sumatriptan is a 5-HT1B/1D agonist, and combining it with a serotonin-active antipsychotic carries a theoretical risk of serotonin toxicity. Reports with this specific pair are lacking and the risk is probably low.
What this interaction means in plain words
Pimavanserin 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
Possible additive serotonergic effects; not well established.
What to do
No dose change is needed; instruct patients to report agitation, tremor, sweating or fever after dosing.
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?
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Other interactions of Pimavanserin
- Lefamulin + Pimavanserin Contraindicated
- Pimavanserin + Pimozide Contraindicated
- Pimavanserin + Vandetanib Contraindicated
- Adagrasib + Pimavanserin Major
- Amiodarone + Pimavanserin Major
- Amisulpride + Pimavanserin Major
Frequently asked questions
Can I take Pimavanserin with Sumatriptan intranasal?
MediHelp rates the interaction as minor. Pimavanserin 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. Sumatriptan is a 5-HT1B/1D agonist, and combining it with a serotonin-active antipsychotic carries a theoretical risk of serotonin toxicity. Reports with this specific pair are lacking and the risk is probably low.
How serious is the interaction between Pimavanserin 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: No dose change is needed; instruct patients to report agitation, tremor, sweating or fever after dosing.
What other medicines interact with Pimavanserin?
MediHelp also lists interactions of Pimavanserin with, for example, Lefamulin, Pimozide, Vandetanib. The full list is on the Pimavanserin page.
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