Drug interactions
Epinephrine racemic + Risperidone
Severity: Minor
Epinephrine racemic and Risperidone: minor 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 blocks alpha-1 receptors, so epinephrine's vasoconstrictor effect can be reduced and its beta-mediated vasodilation may produce hypotension and tachycardia. Both agents may also have effects on the QT interval, but with inhaled racemic epinephrine systemic exposure is generally low.
What this interaction means in plain words
Epinephrine racemic and Risperidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Pharmacodynamic opposition at alpha-adrenergic receptors, with possible additive cardiac effects.
What to do
Monitor blood pressure and heart rate if systemic or high-dose epinephrine is needed; avoid epinephrine for treating risperidone-induced hypotension.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Epinephrine racemic with Risperidone?
MediHelp rates the interaction as minor. Epinephrine racemic and Risperidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Risperidone blocks alpha-1 receptors, so epinephrine's vasoconstrictor effect can be reduced and its beta-mediated vasodilation may produce hypotension and tachycardia. Both agents may also have effects on the QT interval, but with inhaled racemic epinephrine systemic exposure is generally low.
How serious is the interaction between Epinephrine racemic and Risperidone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure and heart rate if systemic or high-dose epinephrine is needed; avoid epinephrine for treating risperidone-induced hypotension.
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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