Drug interactions
Fentanyl intranasal + Zaleplon
Severity: Major
Fentanyl intranasal and Zaleplon: 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
Zaleplon with intranasal fentanyl produces additive CNS and respiratory depression, which can lead to profound sedation, hypotension, coma or death.
What this interaction means in plain words
Fentanyl intranasal and Zaleplon 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 pharmacodynamic CNS depression through opioid receptor agonism and GABA-A modulation.
What to do
Avoid if possible; otherwise use the lowest doses and monitor for sedation and respiratory depression.
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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Other interactions of Zaleplon
- Calcium / magnesium / potassium / sodium oxybates + Zaleplon Contraindicated
- Sodium oxybate + Zaleplon Contraindicated
- Brexanolone + Zaleplon Major
- Buprenorphine long-acting + Zaleplon Major
- Buprenorphine subdermal implant + Zaleplon Major
- Buprenorphine transdermal + Zaleplon Major
Frequently asked questions
Can I take Fentanyl intranasal with Zaleplon?
MediHelp rates the interaction as major. Fentanyl intranasal and Zaleplon 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. Zaleplon with intranasal fentanyl produces additive CNS and respiratory depression, which can lead to profound sedation, hypotension, coma or death.
How serious is the interaction between Fentanyl intranasal and Zaleplon?
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 if possible; otherwise use the lowest doses and monitor for sedation and respiratory depression.
What other medicines interact with Zaleplon?
MediHelp also lists interactions of Zaleplon with, for example, Calcium / magnesium / potassium / sodium oxybates, Sodium oxybate, Brexanolone. The full list is on the Zaleplon page.
Full monographs, dosing and an interaction checker in the MediHelp app
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