Drug interactions
Doxylamine + Lemborexant
Severity: Moderate
Doxylamine and Lemborexant: 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 promote sleep and sedation. Using them together may increase next-day drowsiness and psychomotor impairment, and lemborexant labeling advises against combining it with other insomnia drugs.
What this interaction means in plain words
Doxylamine and Lemborexant 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.
Doxylamine belongs to Respiratory; Lemborexant belongs to Central Nervous System.
Why it happens
Additive sedation from orexin receptor antagonism and histamine H1 blockade.
What to do
Avoid using doxylamine as a sleep aid with lemborexant; if combined, monitor for daytime impairment and counsel about driving.
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 Lemborexant
Frequently asked questions
Can I take Doxylamine with Lemborexant?
MediHelp rates the interaction as moderate. Doxylamine and Lemborexant 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 promote sleep and sedation. Using them together may increase next-day drowsiness and psychomotor impairment, and lemborexant labeling advises against combining it with other insomnia drugs.
How serious is the interaction between Doxylamine and Lemborexant?
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 using doxylamine as a sleep aid with lemborexant; if combined, monitor for daytime impairment and counsel about driving.
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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