Drug interactions
Fentanyl intranasal + Quetiapine
Severity: Major
Fentanyl intranasal and Quetiapine: 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
Combining an opioid with a sedating antipsychotic adds to central nervous system and respiratory depression. This can lead to profound sedation, respiratory depression, hypotension and coma.
What this interaction means in plain words
Fentanyl intranasal and Quetiapine 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 from opioid agonism and antipsychotic sedative (H1, alpha-1) effects.
What to do
Reserve concurrent use for patients without adequate alternatives, using the lowest effective doses and shortest duration. Monitor respiratory rate and level of sedation closely.
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 Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
Frequently asked questions
Can I take Fentanyl intranasal with Quetiapine?
MediHelp rates the interaction as major. Fentanyl intranasal and Quetiapine 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. Combining an opioid with a sedating antipsychotic adds to central nervous system and respiratory depression. This can lead to profound sedation, respiratory depression, hypotension and coma.
How serious is the interaction between Fentanyl intranasal and Quetiapine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reserve concurrent use for patients without adequate alternatives, using the lowest effective doses and shortest duration. Monitor respiratory rate and level of sedation closely.
What other medicines interact with Quetiapine?
MediHelp also lists interactions of Quetiapine with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Quetiapine page.
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