Drug interactions
Norepinephrine + Risperidone
Severity: Moderate
Norepinephrine 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
Risperidone's alpha-1 blockade can blunt the pressor response to norepinephrine, which may require higher infusion rates to maintain blood pressure in shock. This is relevant mainly in hospitalized patients receiving vasopressors.
What this interaction means in plain words
Norepinephrine 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
Pharmacodynamic antagonism at alpha-1 adrenergic receptors.
What to do
Titrate norepinephrine to blood pressure targets and expect possibly higher requirements. Consider holding risperidone during acute hemodynamic instability.
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 Norepinephrine with Risperidone?
MediHelp rates the interaction as moderate. Norepinephrine 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. Risperidone's alpha-1 blockade can blunt the pressor response to norepinephrine, which may require higher infusion rates to maintain blood pressure in shock. This is relevant mainly in hospitalized patients receiving vasopressors.
How serious is the interaction between Norepinephrine 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: Titrate norepinephrine to blood pressure targets and expect possibly higher requirements. Consider holding risperidone during acute hemodynamic instability.
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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