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Drug interactions

Chlordiazepoxide-clidinium + Fentanyl intranasal

Severity: Major

Chlordiazepoxide-clidinium and Fentanyl intranasal: major 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

Fentanyl with benzodiazepines such as chlordiazepoxide can cause profound sedation, respiratory depression, coma and death.

What this interaction means in plain words

Chlordiazepoxide-clidinium and Fentanyl intranasal can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.

Evidence level: High

Why it happens

Additive CNS and respiratory depression from opioid and benzodiazepine effects.

What to do

Reserve for patients without adequate alternatives, using the lowest doses and shortest duration. Monitor for respiratory depression and sedation.

What to ask your pharmacist

  • Does the benefit of taking both outweigh the risk in my case?
  • Do I need any blood test, ECG or other check while on both?
  • What early warning signs should I watch for, and what should I do if they appear?

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 Chlordiazepoxide-clidinium with Fentanyl intranasal?

MediHelp rates the interaction as major. Chlordiazepoxide-clidinium and Fentanyl intranasal can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Fentanyl with benzodiazepines such as chlordiazepoxide can cause profound sedation, respiratory depression, coma and death.

How serious is the interaction between Chlordiazepoxide-clidinium and Fentanyl intranasal?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reserve for patients without adequate alternatives, using the lowest doses and shortest duration. Monitor for respiratory depression and sedation.

What other medicines interact with Chlordiazepoxide-clidinium?

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

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