Drug interactions
Daridorexant + Mifepristone
Severity: Major
Daridorexant and Mifepristone: 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
Mifepristone inhibits CYP3A4 and is expected to raise daridorexant exposure. This can cause excessive sedation, next-day impairment and somnolence.
What this interaction means in plain words
Daridorexant and Mifepristone 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.
Daridorexant belongs to Central Nervous System; Mifepristone belongs to Endocrine.
Why it happens
CYP3A4 inhibition reduces daridorexant metabolism.
What to do
Avoid the combination, as strong CYP3A4 inhibitors are not recommended with daridorexant. Choose a hypnotic not dependent on CYP3A4.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Daridorexant 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 14 days on the web. No card needed.
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 Daridorexant
Frequently asked questions
Can I take Daridorexant with Mifepristone?
MediHelp rates the interaction as major. Daridorexant and Mifepristone 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. Mifepristone inhibits CYP3A4 and is expected to raise daridorexant exposure. This can cause excessive sedation, next-day impairment and somnolence.
How serious is the interaction between Daridorexant and Mifepristone?
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, as strong CYP3A4 inhibitors are not recommended with daridorexant. Choose a hypnotic not dependent on CYP3A4.
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.
