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Drug interactions

Cyclizine + Moxonidine

Severity: Moderate

Cyclizine and Moxonidine: 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

Moxonidine can cause drowsiness and dizziness, and with a sedating antihistamine the effects may add up. Blood pressure may also fall further, raising fall risk.

What this interaction means in plain words

Cyclizine and Moxonidine 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.

Evidence level: Low

Why it happens

Additive CNS depression, with central sympatholytic action adding hypotensive effects.

What to do

Monitor sedation and blood pressure when starting cyclizine. Counsel patients about driving and rising slowly from sitting.

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 Cyclizine with Moxonidine?

MediHelp rates the interaction as moderate. Cyclizine and Moxonidine 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. Moxonidine can cause drowsiness and dizziness, and with a sedating antihistamine the effects may add up. Blood pressure may also fall further, raising fall risk.

How serious is the interaction between Cyclizine and Moxonidine?

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 sedation and blood pressure when starting cyclizine. Counsel patients about driving and rising slowly from sitting.

What other medicines interact with Cyclizine?

MediHelp also lists interactions of Cyclizine with, for example, Calcium / magnesium / potassium / sodium oxybates, Henbane, Sodium oxybate. The full list is on the Cyclizine 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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