Drug interactions
Daridorexant + Doxylamine
Severity: Moderate
Daridorexant and Doxylamine: 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 cause sedation, and taking them together can intensify next-day drowsiness and impair psychomotor performance and driving. Doxylamine is often used as an over-the-counter sleep aid, so duplicate hypnotic therapy is a realistic scenario.
What this interaction means in plain words
Daridorexant and Doxylamine 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; Doxylamine belongs to Respiratory.
Why it happens
Additive CNS depression from orexin receptor antagonism plus histamine H1 blockade.
What to do
Avoid combining doxylamine with daridorexant for sleep. If other sedatives are required, use the lowest doses and counsel the patient on daytime impairment.
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?
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Other interactions of Doxylamine
Other interactions of Daridorexant
Frequently asked questions
Can I take Daridorexant with Doxylamine?
MediHelp rates the interaction as moderate. Daridorexant and Doxylamine 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 cause sedation, and taking them together can intensify next-day drowsiness and impair psychomotor performance and driving. Doxylamine is often used as an over-the-counter sleep aid, so duplicate hypnotic therapy is a realistic scenario.
How serious is the interaction between Daridorexant and Doxylamine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid combining doxylamine with daridorexant for sleep. If other sedatives are required, use the lowest doses and counsel the patient on daytime impairment.
What other medicines interact with Doxylamine?
MediHelp also lists interactions of Doxylamine with, for example, Belladonna and opium, Benzhydrocodone / acetaminophen, Brexanolone. The full list is on the Doxylamine page.
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