Drug interactions
Midazolam intranasal + Risperidone
Severity: Moderate
Midazolam 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
Both agents depress the CNS, so combined use can deepen sedation and, with other depressants, cause hypoventilation or apnea. Risperidone is not a meaningful CYP3A4 inhibitor, so the main concern is the additive pharmacodynamic effect.
What this interaction means in plain words
Midazolam 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 via GABA-A potentiation and antipsychotic sedative effects.
What to do
Use the lowest effective midazolam dose and monitor respiratory rate, oxygen saturation and level of consciousness after administration. Avoid additional sedatives or alcohol.
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 Midazolam intranasal with Risperidone?
MediHelp rates the interaction as moderate. Midazolam 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. Both agents depress the CNS, so combined use can deepen sedation and, with other depressants, cause hypoventilation or apnea. Risperidone is not a meaningful CYP3A4 inhibitor, so the main concern is the additive pharmacodynamic effect.
How serious is the interaction between Midazolam 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 midazolam dose and monitor respiratory rate, oxygen saturation and level of consciousness after administration. Avoid additional sedatives or alcohol.
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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