Drug interactions
Fluphenazine + Sumatriptan intranasal
Severity: Moderate
Fluphenazine and Sumatriptan intranasal: moderate 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
Triptans combined with antipsychotics have been associated with serotonin syndrome in rare reports, and the dopamine-blocking activity of fluphenazine could theoretically contribute to neuroleptic malignant syndrome-like presentations. The absolute risk appears low.
What this interaction means in plain words
Fluphenazine and Sumatriptan intranasal can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive serotonergic activity and dopamine blockade; the mechanism is largely theoretical.
What to do
Counsel patients to report agitation, tremor, fever, sweating or muscle rigidity. Monitor for serotonin toxicity or neuroleptic malignant syndrome, especially after dose increases.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Fluphenazine
- Arsenic trioxide + Fluphenazine Contraindicated
- Dofetilide + Fluphenazine Contraindicated
- Fluphenazine + Ibutilide Contraindicated
- Fluphenazine + Pimozide Contraindicated
- Adagrasib + Fluphenazine Major
- Alfentanil + Fluphenazine Major
Frequently asked questions
Can I take Fluphenazine with Sumatriptan intranasal?
MediHelp rates the interaction as moderate. Fluphenazine and Sumatriptan intranasal can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Triptans combined with antipsychotics have been associated with serotonin syndrome in rare reports, and the dopamine-blocking activity of fluphenazine could theoretically contribute to neuroleptic malignant syndrome-like presentations. The absolute risk appears low.
How serious is the interaction between Fluphenazine and Sumatriptan intranasal?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Counsel patients to report agitation, tremor, fever, sweating or muscle rigidity. Monitor for serotonin toxicity or neuroleptic malignant syndrome, especially after dose increases.
What other medicines interact with Fluphenazine?
MediHelp also lists interactions of Fluphenazine with, for example, Arsenic trioxide, Dofetilide, Ibutilide. The full list is on the Fluphenazine page.
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