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Drug interactions

Lasmiditan + Lorazepam

Severity: Moderate

Lasmiditan and Lorazepam: 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 may impair driving. Lorazepam can add to these effects, increasing sedation and cognitive impairment.

What this interaction means in plain words

Lasmiditan and Lorazepam 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 belongs to Central Nervous System; Lorazepam belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive CNS depressant effects; lasmiditan acts on 5-HT1F receptors while lorazepam potentiates GABA-A.

What to do

Monitor for excessive sedation and advise patients not to drive for at least 8 hours after lasmiditan, longer if lorazepam causes drowsiness.

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 Lasmiditan with Lorazepam?

MediHelp rates the interaction as moderate. Lasmiditan and Lorazepam 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 may impair driving. Lorazepam can add to these effects, increasing sedation and cognitive impairment.

How serious is the interaction between Lasmiditan and Lorazepam?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for excessive sedation and advise patients not to drive for at least 8 hours after lasmiditan, longer if lorazepam causes drowsiness.

What other medicines interact with Lorazepam?

MediHelp also lists interactions of Lorazepam with, for example, Alfentanil, Alprazolam, Amobarbital. The full list is on the Lorazepam page.

Full monographs, dosing and an interaction checker in the MediHelp app

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