Drug interactions
Dihydroergotamine + Mifepristone
Severity: Contraindicated
Dihydroergotamine and Mifepristone: contraindicated interaction.
Last updated Sources: US FDA label
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
Mifepristone inhibits CYP3A4 and may increase dihydroergotamine exposure, raising the risk of ergotism with severe peripheral and cerebral vasospasm and ischemia.
What this interaction means in plain words
Dihydroergotamine and Mifepristone 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; Mifepristone belongs to Endocrine.
Why it happens
Mifepristone inhibits CYP3A4-mediated dihydroergotamine metabolism.
What to do
Do not combine. Use a non-ergot migraine treatment, and delay dihydroergotamine until mifepristone has been cleared, which is slow.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dihydroergotamine and Mifepristone, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
References
Other interactions of Mifepristone
- Apixaban + Mifepristone Contraindicated
- Argatroban + Mifepristone Contraindicated
- Cisapride + Mifepristone Contraindicated
- Cortisone + Mifepristone Contraindicated
- Cyclosporin + Mifepristone Contraindicated
- Dabigatran etexilate + Mifepristone 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 Mifepristone?
MediHelp rates the interaction as contraindicated. Dihydroergotamine and Mifepristone 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. Mifepristone inhibits CYP3A4 and may increase dihydroergotamine exposure, raising the risk of ergotism with severe peripheral and cerebral vasospasm and ischemia.
How serious is the interaction between Dihydroergotamine and Mifepristone?
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 combine. Use a non-ergot migraine treatment, and delay dihydroergotamine until mifepristone has been cleared, which is slow.
What other medicines interact with Mifepristone?
MediHelp also lists interactions of Mifepristone with, for example, Apixaban, Argatroban, Cisapride. The full list is on the Mifepristone page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
