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Drug interactions

Chlordiazepoxide + Midazolam intranasal

Severity: Major

Chlordiazepoxide and Midazolam intranasal: major interaction.

Last updated Sources: US FDA label

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

Two benzodiazepines used together produce additive sedation and may cause hypoventilation, airway obstruction or apnea. Effects can be profound and prolonged.

What this interaction means in plain words

Chlordiazepoxide and Midazolam 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: Moderate

Why it happens

Additive GABA-A receptor-mediated central nervous system and respiratory depression.

What to do

Avoid unnecessary co-use and reduce the midazolam dose when chlordiazepoxide has been taken. Monitor respiration and sedation, with resuscitation capability available.

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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References

Frequently asked questions

Can I take Chlordiazepoxide with Midazolam intranasal?

MediHelp rates the interaction as major. Chlordiazepoxide and Midazolam 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. Two benzodiazepines used together produce additive sedation and may cause hypoventilation, airway obstruction or apnea. Effects can be profound and prolonged.

How serious is the interaction between Chlordiazepoxide and Midazolam 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: Avoid unnecessary co-use and reduce the midazolam dose when chlordiazepoxide has been taken. Monitor respiration and sedation, with resuscitation capability available.

What other medicines interact with Chlordiazepoxide?

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

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