Drug interactions
Arformoterol + Risperidone
Severity: Minor
Arformoterol 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
Arformoterol, a long-acting beta-2 agonist, can cause tachycardia, hypokalemia and QT prolongation. Risperidone has modest QT effects, so the combination may increase arrhythmia risk in susceptible patients. At standard inhaled doses the risk is small.
What this interaction means in plain words
Arformoterol 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.
Arformoterol belongs to Respiratory; Risperidone belongs to Central Nervous System.
Why it happens
Additive QT effects, with beta-agonist induced hypokalemia adding to susceptibility.
What to do
No routine change is needed. Monitor ECG and potassium in patients with cardiac disease, electrolyte problems or other QT-prolonging drugs.
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
Other interactions of Arformoterol
Frequently asked questions
Can I take Arformoterol with Risperidone?
MediHelp rates the interaction as minor. Arformoterol 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. Arformoterol, a long-acting beta-2 agonist, can cause tachycardia, hypokalemia and QT prolongation. Risperidone has modest QT effects, so the combination may increase arrhythmia risk in susceptible patients. At standard inhaled doses the risk is small.
How serious is the interaction between Arformoterol 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: No routine change is needed. Monitor ECG and potassium in patients with cardiac disease, electrolyte problems or other QT-prolonging drugs.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
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