Drug interactions
Fentanyl intranasal + Nalbuphine
Severity: Major
Fentanyl intranasal and Nalbuphine: 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
Nalbuphine can antagonize fentanyl at the mu receptor, reducing analgesia and precipitating withdrawal in opioid-tolerant patients. It also adds to sedation, hypotension and respiratory depression.
What this interaction means in plain words
Fentanyl intranasal and Nalbuphine 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
Mu-receptor antagonism by a mixed agonist-antagonist, with additive CNS and respiratory depression.
What to do
Avoid combining in opioid-tolerant patients. If used, monitor for withdrawal, loss of analgesia 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 Nalbuphine
- Alvimopan + Nalbuphine Contraindicated
- Nalbuphine + Olanzapine / samidorphan Contraindicated
- Alprazolam + Nalbuphine Major
- Amobarbital + Nalbuphine Major
- Benzhydrocodone / acetaminophen + Nalbuphine Major
- Brexanolone + Nalbuphine Major
Frequently asked questions
Can I take Fentanyl intranasal with Nalbuphine?
MediHelp rates the interaction as major. Fentanyl intranasal and Nalbuphine 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. Nalbuphine can antagonize fentanyl at the mu receptor, reducing analgesia and precipitating withdrawal in opioid-tolerant patients. It also adds to sedation, hypotension and respiratory depression.
How serious is the interaction between Fentanyl intranasal and Nalbuphine?
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 combining in opioid-tolerant patients. If used, monitor for withdrawal, loss of analgesia and respiratory depression.
What other medicines interact with Nalbuphine?
MediHelp also lists interactions of Nalbuphine with, for example, Alvimopan, Olanzapine / samidorphan, Alprazolam. The full list is on the Nalbuphine page.
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