Skip to content

Drug interactions

Cyclizine + Dexfenfluramine

Severity: Minor

Cyclizine and Dexfenfluramine: minor 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

Cyclizine is sedating while dexfenfluramine is a serotonergic anorectic with stimulant-like properties. No consistent or clinically important interaction is established, and the opposing effects on alertness are unpredictable.

What this interaction means in plain words

Cyclizine and Dexfenfluramine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Evidence level: Low

Why it happens

Opposing central effects; no established pharmacokinetic or pharmacodynamic mechanism.

What to do

No specific action is needed beyond monitoring patient response. Dexfenfluramine is withdrawn in most markets.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

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

Pro+ members

Unlock the full page

Create an account and start a Pro+ trial to unlock the full management advice for Cyclizine and Dexfenfluramine, the additional notes, the evidence detail and the whole-prescription interaction checker.

  • Full clinical management advice
  • Additional notes
  • Evidence detail
  • Interaction checker for a whole prescription

Try Pro+ free for 7 days on the web. No card needed.

Frequently asked questions

Can I take Cyclizine with Dexfenfluramine?

MediHelp rates the interaction as minor. Cyclizine and Dexfenfluramine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Cyclizine is sedating while dexfenfluramine is a serotonergic anorectic with stimulant-like properties. No consistent or clinically important interaction is established, and the opposing effects on alertness are unpredictable.

How serious is the interaction between Cyclizine and Dexfenfluramine?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No specific action is needed beyond monitoring patient response. Dexfenfluramine is withdrawn in most markets.

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.

Browse A–Z · Drug interactions

Get the app Sign in