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Drug interactions

Dimenhydrinate + Lasmiditan

Severity: Moderate

Dimenhydrinate and Lasmiditan: 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

Lasmiditan commonly causes dizziness and somnolence, and dimenhydrinate is also sedating. Combined use may worsen drowsiness and impair cognition and psychomotor performance.

What this interaction means in plain words

Dimenhydrinate and Lasmiditan 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.

Dimenhydrinate belongs to Respiratory; Lasmiditan belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive CNS depressant effects.

What to do

Warn patients about additive sedation and advise no driving for at least 8 hours after lasmiditan. Avoid or minimise other sedating drugs when possible.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Dimenhydrinate with Lasmiditan?

MediHelp rates the interaction as moderate. Dimenhydrinate and Lasmiditan 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. Lasmiditan commonly causes dizziness and somnolence, and dimenhydrinate is also sedating. Combined use may worsen drowsiness and impair cognition and psychomotor performance.

How serious is the interaction between Dimenhydrinate and Lasmiditan?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Warn patients about additive sedation and advise no driving for at least 8 hours after lasmiditan. Avoid or minimise other sedating drugs when possible.

What other medicines interact with Dimenhydrinate?

MediHelp also lists interactions of Dimenhydrinate with, for example, Belladonna and opium, Brexanolone, Calcium / magnesium / potassium / sodium oxybates. The full list is on the Dimenhydrinate page.

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