Drug interactions
Lemborexant + Orphenadrin
Severity: Moderate
Lemborexant and Orphenadrin: 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
Lemborexant is cleared mainly by CYP3A4, and weak inhibitors can raise its levels, increasing next-day somnolence. Orphenadrine also adds sedative CNS effects, so impairment may be more pronounced.
What this interaction means in plain words
Lemborexant and Orphenadrin 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; Orphenadrin belongs to Musculoskeletal.
Why it happens
Possible weak CYP3A4 inhibition plus additive CNS depression.
What to do
Use the lower lemborexant dose range and avoid exceeding the labeled maximum with weak CYP3A4 inhibitors. Counsel patients about next-day drowsiness and 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 Orphenadrin
Other interactions of Lemborexant
Frequently asked questions
Can I take Lemborexant with Orphenadrin?
MediHelp rates the interaction as moderate. Lemborexant and Orphenadrin 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 is cleared mainly by CYP3A4, and weak inhibitors can raise its levels, increasing next-day somnolence. Orphenadrine also adds sedative CNS effects, so impairment may be more pronounced.
How serious is the interaction between Lemborexant and Orphenadrin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lower lemborexant dose range and avoid exceeding the labeled maximum with weak CYP3A4 inhibitors. Counsel patients about next-day drowsiness and driving.
What other medicines interact with Orphenadrin?
MediHelp also lists interactions of Orphenadrin with, for example, Alfentanil, Amobarbital, Benzhydrocodone / acetaminophen. The full list is on the Orphenadrin page.
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