Drug interactions
Daridorexant + Levocetirizine
Severity: Moderate
Daridorexant and Levocetirizine: 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
Both drugs can cause sedation, so taking them together may increase next-day drowsiness and impair psychomotor performance, including driving. The effect is additive and usually manageable.
What this interaction means in plain words
Daridorexant and Levocetirizine 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.
Daridorexant belongs to Central Nervous System; Levocetirizine belongs to Respiratory.
Why it happens
Additive CNS depression from H1 antagonism and orexin receptor antagonism.
What to do
Counsel patients about daytime impairment and avoid driving until they know how the combination affects them. Consider using levocetirizine in the morning or reducing the daridorexant dose if sedation persists.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Daridorexant and Levocetirizine, 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.
Other interactions of Levocetirizine
Other interactions of Daridorexant
Frequently asked questions
Can I take Daridorexant with Levocetirizine?
MediHelp rates the interaction as moderate. Daridorexant and Levocetirizine 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. Both drugs can cause sedation, so taking them together may increase next-day drowsiness and impair psychomotor performance, including driving. The effect is additive and usually manageable.
How serious is the interaction between Daridorexant and Levocetirizine?
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 patients about daytime impairment and avoid driving until they know how the combination affects them. Consider using levocetirizine in the morning or reducing the daridorexant dose if sedation persists.
What other medicines interact with Levocetirizine?
MediHelp also lists interactions of Levocetirizine with, for example, Acrivastine, Asenapine transdermal, Avapritinib. The full list is on the Levocetirizine 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.
