Drug interactions
Lemborexant + Oxybutynin
Severity: Moderate
Lemborexant and Oxybutynin: 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
Weak CYP3A4 inhibition can raise lemborexant exposure, and both agents can cause somnolence. This may increase next-day drowsiness and impaired alertness.
What this interaction means in plain words
Lemborexant and Oxybutynin 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.
Lemborexant belongs to Central Nervous System; Oxybutynin belongs to Genitourinary.
Why it happens
Reduced CYP3A4 metabolism of lemborexant combined with additive CNS depressant effects.
What to do
Limit lemborexant to the lower recommended nightly dose when used with weak CYP3A4 inhibitors, and counsel on next-day 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 Oxybutynin
Other interactions of Lemborexant
Frequently asked questions
Can I take Lemborexant with Oxybutynin?
MediHelp rates the interaction as moderate. Lemborexant and Oxybutynin 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. Weak CYP3A4 inhibition can raise lemborexant exposure, and both agents can cause somnolence. This may increase next-day drowsiness and impaired alertness.
How serious is the interaction between Lemborexant and Oxybutynin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Limit lemborexant to the lower recommended nightly dose when used with weak CYP3A4 inhibitors, and counsel on next-day impairment.
What other medicines interact with Oxybutynin?
MediHelp also lists interactions of Oxybutynin with, for example, Bethanechol, Clozapine, Potassium chloride. The full list is on the Oxybutynin page.
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