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Drug interactions

Cyclobenzaprine + Midazolam intranasal

Severity: Major

Cyclobenzaprine 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

Midazolam is a benzodiazepine that depresses respiration, and cyclobenzaprine adds sedation. Together they may increase risk of hypoventilation, airway obstruction, desaturation and prolonged sedation.

What this interaction means in plain words

Cyclobenzaprine 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 CNS and respiratory depression.

What to do

Monitor respiration and oxygen saturation after the dose, and avoid giving other sedatives together where possible. Consider a reduced midazolam dose.

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 Cyclobenzaprine with Midazolam intranasal?

MediHelp rates the interaction as major. Cyclobenzaprine 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. Midazolam is a benzodiazepine that depresses respiration, and cyclobenzaprine adds sedation. Together they may increase risk of hypoventilation, airway obstruction, desaturation and prolonged sedation.

How serious is the interaction between Cyclobenzaprine 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: Monitor respiration and oxygen saturation after the dose, and avoid giving other sedatives together where possible. Consider a reduced midazolam dose.

What other medicines interact with Cyclobenzaprine?

MediHelp also lists interactions of Cyclobenzaprine with, for example, Isocarboxazid, Linezolid, Phenelzine. The full list is on the Cyclobenzaprine page.

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