Drug interactions
Perphenazine + Rizatriptan
Severity: Minor
Perphenazine and Rizatriptan: 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
Antipsychotics and triptans have been theoretically linked to serotonin syndrome, although reports are rare. Serotonergic modulation may also influence dopamine blockade effects.
What this interaction means in plain words
Perphenazine and Rizatriptan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Perphenazine belongs to Central Nervous System; Rizatriptan belongs to Central Nervous System.
Why it happens
Possible additive serotonergic effects via 5-HT receptor activity; mechanism not well established.
What to do
No routine change is needed; counsel patients to report agitation, tremor, fever, or muscle rigidity. Stop the triptan if serotonin toxicity 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?
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Other interactions of Perphenazine
- Ibutilide + Perphenazine Contraindicated
- Perphenazine + Pimozide Contraindicated
- Perphenazine + Thioridazine Contraindicated
- Adagrasib + Perphenazine Major
- Alfentanil + Perphenazine Major
- Amiodarone + Perphenazine Major
Other interactions of Rizatriptan
- Almotriptan + Rizatriptan Contraindicated
- Dihydroergotamine intranasal + Rizatriptan Contraindicated
- Dihydroergotamine + Rizatriptan Contraindicated
- Eletriptan + Rizatriptan Contraindicated
- Ergoloid mesylates + Rizatriptan Contraindicated
- Ergotamine + Rizatriptan Contraindicated
Frequently asked questions
Can I take Perphenazine with Rizatriptan?
MediHelp rates the interaction as minor. Perphenazine and Rizatriptan have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Antipsychotics and triptans have been theoretically linked to serotonin syndrome, although reports are rare. Serotonergic modulation may also influence dopamine blockade effects.
How serious is the interaction between Perphenazine and Rizatriptan?
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 routine change is needed; counsel patients to report agitation, tremor, fever, or muscle rigidity. Stop the triptan if serotonin toxicity is suspected.
What other medicines interact with Perphenazine?
MediHelp also lists interactions of Perphenazine with, for example, Ibutilide, Pimozide, Thioridazine. The full list is on the Perphenazine page.
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