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Drug interactions

Dimenhydrinate + Lurasidone

Severity: Moderate

Dimenhydrinate and Lurasidone: 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

Dimenhydrinate contains diphenhydramine and is sedating and anticholinergic. Combined with lurasidone it may increase drowsiness and cognitive impairment.

What this interaction means in plain words

Dimenhydrinate and Lurasidone 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; Lurasidone belongs to Central Nervous System.

Evidence level: Low

Why it happens

Additive CNS depressant and anticholinergic effects.

What to do

Monitor for sedation and confusion, especially in older adults. Use the lowest effective dose and avoid driving if drowsy.

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 Lurasidone?

MediHelp rates the interaction as moderate. Dimenhydrinate and Lurasidone 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 contains diphenhydramine and is sedating and anticholinergic. Combined with lurasidone it may increase drowsiness and cognitive impairment.

How serious is the interaction between Dimenhydrinate and Lurasidone?

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 sedation and confusion, especially in older adults. Use the lowest effective dose and avoid driving if drowsy.

What other medicines interact with Lurasidone?

MediHelp also lists interactions of Lurasidone with, for example, Apalutamide, Atazanavir, Carbamazepine. The full list is on the Lurasidone page.

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

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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