Drug interactions
Dihydroergotamine intranasal + Duloxetine
Severity: Moderate
Dihydroergotamine intranasal and Duloxetine: 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
Intranasal dihydroergotamine is systemically absorbed and has serotonin receptor agonist activity, while duloxetine raises serotonin levels. The combination carries a theoretical risk of serotonin syndrome, though documented cases are rare.
What this interaction means in plain words
Dihydroergotamine intranasal and Duloxetine 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 effects through 5-HT receptor agonism and serotonin reuptake inhibition.
What to do
Counsel the patient on symptoms of serotonin syndrome and monitor after starting or increasing either drug. Stop one or both agents if features of serotonin toxicity develop.
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 Duloxetine
- Duloxetine + Isocarboxazid Contraindicated
- Duloxetine + Linezolid Contraindicated
- Duloxetine + Methylene blue Contraindicated
- Duloxetine + Phenelzine Contraindicated
- Duloxetine + Procarbazine Contraindicated
- Duloxetine + Rasagiline Contraindicated
Frequently asked questions
Can I take Dihydroergotamine intranasal with Duloxetine?
MediHelp rates the interaction as moderate. Dihydroergotamine intranasal and Duloxetine 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. Intranasal dihydroergotamine is systemically absorbed and has serotonin receptor agonist activity, while duloxetine raises serotonin levels. The combination carries a theoretical risk of serotonin syndrome, though documented cases are rare.
How serious is the interaction between Dihydroergotamine intranasal and Duloxetine?
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 the patient on symptoms of serotonin syndrome and monitor after starting or increasing either drug. Stop one or both agents if features of serotonin toxicity develop.
What other medicines interact with Duloxetine?
MediHelp also lists interactions of Duloxetine with, for example, Isocarboxazid, Linezolid, Methylene blue. The full list is on the Duloxetine page.
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