Drug interactions
Dihydroergotamine + Posaconazole
Severity: Contraindicated
Dihydroergotamine and Posaconazole: contraindicated 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
Posaconazole markedly raises dihydroergotamine exposure. This can cause ergotism with severe peripheral and cerebral vasospasm and ischemia of the limbs, bowel or brain.
What this interaction means in plain words
Dihydroergotamine and Posaconazole are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Dihydroergotamine belongs to Central Nervous System; Posaconazole belongs to Anti Fungals.
Why it happens
Posaconazole strongly inhibits CYP3A4, the main metabolic pathway of dihydroergotamine.
What to do
Do not co-administer; this is a labeled contraindication. Use a non-ergot migraine treatment while on posaconazole.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Posaconazole
- Artemether + Posaconazole Contraindicated
- Avanafil + Posaconazole Contraindicated
- Cobimetinib + Posaconazole Contraindicated
- Conivaptan + Posaconazole Contraindicated
- Dihydroergotamine intranasal + Posaconazole Contraindicated
- Dronedarone + Posaconazole Contraindicated
Other interactions of Dihydroergotamine
- Almotriptan + Dihydroergotamine Contraindicated
- Clarithromycin + Dihydroergotamine Contraindicated
- Dihydroergotamine + Dopamine Contraindicated
- Dihydroergotamine + Dronedarone Contraindicated
- Dihydroergotamine + Efavirenz Contraindicated
- Dihydroergotamine + Eletriptan Contraindicated
Frequently asked questions
Can I take Dihydroergotamine with Posaconazole?
MediHelp rates the interaction as contraindicated. Dihydroergotamine and Posaconazole are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Posaconazole markedly raises dihydroergotamine exposure. This can cause ergotism with severe peripheral and cerebral vasospasm and ischemia of the limbs, bowel or brain.
How serious is the interaction between Dihydroergotamine and Posaconazole?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not co-administer; this is a labeled contraindication. Use a non-ergot migraine treatment while on posaconazole.
What other medicines interact with Posaconazole?
MediHelp also lists interactions of Posaconazole with, for example, Artemether, Avanafil, Cobimetinib. The full list is on the Posaconazole page.
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