Drug interactions
Fentanyl intranasal + Risperidone
Severity: Moderate
Fentanyl intranasal and Risperidone: moderate 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
Opioids and antipsychotics both depress the central nervous system, so together they can cause excess sedation, hypotension and respiratory depression. The risk is highest with higher opioid doses and in opioid-naive or older patients.
What this interaction means in plain words
Fentanyl intranasal and Risperidone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive CNS and respiratory depression, with additive hypotension from alpha-blockade.
What to do
Use the lowest effective fentanyl dose and monitor sedation, respiratory rate and blood pressure, particularly at initiation or dose increases.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Risperidone
- Ibutilide + Risperidone Contraindicated
- Risperidone + Vandetanib Contraindicated
- Adagrasib + Risperidone Major
- Amiodarone + Risperidone Major
- Amisulpride + Risperidone Major
- Amoxapine + Risperidone Major
Frequently asked questions
Can I take Fentanyl intranasal with Risperidone?
MediHelp rates the interaction as moderate. Fentanyl intranasal and Risperidone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Opioids and antipsychotics both depress the central nervous system, so together they can cause excess sedation, hypotension and respiratory depression. The risk is highest with higher opioid doses and in opioid-naive or older patients.
How serious is the interaction between Fentanyl intranasal and Risperidone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use the lowest effective fentanyl dose and monitor sedation, respiratory rate and blood pressure, particularly at initiation or dose increases.
What other medicines interact with Risperidone?
MediHelp also lists interactions of Risperidone with, for example, Ibutilide, Vandetanib, Adagrasib. The full list is on the Risperidone page.
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