Drug interactions
Clonazepam + Midazolam intranasal
Severity: Major
Clonazepam 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
Both are benzodiazepines, so combined use produces additive sedation and can cause hypoventilation, airway obstruction or apnea. Prolonged clonazepam exposure may complicate the dose needed for rescue midazolam.
What this interaction means in plain words
Clonazepam 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.
Why it happens
Additive CNS and respiratory depression through GABA-A receptor potentiation.
What to do
Monitor respiration and level of consciousness after midazolam dosing, and ensure airway support is available. Avoid repeat dosing without clinical reassessment.
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?
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References
Other interactions of Clonazepam
- Calcium / magnesium / potassium / sodium oxybates + Clonazepam Contraindicated
- Clonazepam + Sodium oxybate Contraindicated
- Alfentanil + Clonazepam Major
- Alprazolam + Clonazepam Major
- Amobarbital + Clonazepam Major
- Belladonna and opium + Clonazepam Major
Frequently asked questions
Can I take Clonazepam with Midazolam intranasal?
MediHelp rates the interaction as major. Clonazepam 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. Both are benzodiazepines, so combined use produces additive sedation and can cause hypoventilation, airway obstruction or apnea. Prolonged clonazepam exposure may complicate the dose needed for rescue midazolam.
How serious is the interaction between Clonazepam 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 level of consciousness after midazolam dosing, and ensure airway support is available. Avoid repeat dosing without clinical reassessment.
What other medicines interact with Clonazepam?
MediHelp also lists interactions of Clonazepam with, for example, Calcium / magnesium / potassium / sodium oxybates, Sodium oxybate, Alfentanil. The full list is on the Clonazepam page.
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