Drug interactions
Dexfenfluramine + Zolmitriptan
Severity: Major
Dexfenfluramine and Zolmitriptan: major 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
Dexfenfluramine releases serotonin and blocks its reuptake, so combining it with a triptan may raise the risk of serotonin syndrome. The drug has been withdrawn from most markets, limiting clinical relevance.
What this interaction means in plain words
Dexfenfluramine and Zolmitriptan can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive serotonergic effect from serotonin release and reuptake inhibition combined with 5-HT1B/1D agonism.
What to do
Avoid the combination where possible. If it is used, monitor closely for serotonin toxicity and stop both drugs if it appears.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Zolmitriptan
- Almotriptan + Zolmitriptan Contraindicated
- Dihydroergotamine intranasal + Zolmitriptan Contraindicated
- Dihydroergotamine + Zolmitriptan Contraindicated
- Eletriptan + Zolmitriptan Contraindicated
- Ergoloid mesylates + Zolmitriptan Contraindicated
- Ergotamine + Zolmitriptan Contraindicated
Frequently asked questions
Can I take Dexfenfluramine with Zolmitriptan?
MediHelp rates the interaction as major. Dexfenfluramine and Zolmitriptan can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Dexfenfluramine releases serotonin and blocks its reuptake, so combining it with a triptan may raise the risk of serotonin syndrome. The drug has been withdrawn from most markets, limiting clinical relevance.
How serious is the interaction between Dexfenfluramine and Zolmitriptan?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible. If it is used, monitor closely for serotonin toxicity and stop both drugs if it appears.
What other medicines interact with Zolmitriptan?
MediHelp also lists interactions of Zolmitriptan with, for example, Almotriptan, Dihydroergotamine intranasal, Dihydroergotamine. The full list is on the Zolmitriptan page.
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