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Drug interactions

Dimenhydrinate + Maprotiline

Severity: Moderate

Dimenhydrinate and Maprotiline: 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, a sedating anticholinergic antihistamine, and maprotiline has similar effects. Concurrent use may cause excessive drowsiness, impaired coordination and anticholinergic effects, with confusion and falls a particular concern in the elderly.

What this interaction means in plain words

Dimenhydrinate and Maprotiline 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; Maprotiline belongs to Central Nervous System.

Evidence level: Moderate

Why it happens

Additive H1 antihistaminic sedation and additive muscarinic receptor blockade.

What to do

Avoid driving and alcohol, and use the lowest dose of dimenhydrinate for the shortest time. Monitor older adults for confusion and urinary retention.

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 Maprotiline?

MediHelp rates the interaction as moderate. Dimenhydrinate and Maprotiline 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, a sedating anticholinergic antihistamine, and maprotiline has similar effects. Concurrent use may cause excessive drowsiness, impaired coordination and anticholinergic effects, with confusion and falls a particular concern in the elderly.

How serious is the interaction between Dimenhydrinate and Maprotiline?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid driving and alcohol, and use the lowest dose of dimenhydrinate for the shortest time. Monitor older adults for confusion and urinary retention.

What other medicines interact with Maprotiline?

MediHelp also lists interactions of Maprotiline with, for example, Arsenic trioxide, Disopyramide, Dofetilide. The full list is on the Maprotiline page.

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