Drug interactions
Budesonide-formoterol + Haloperidol
Severity: Major
Budesonide-formoterol and Haloperidol: major 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
Haloperidol is associated with QT prolongation and torsades de pointes, particularly at high doses or intravenously. Formoterol may add to the repolarisation effect and lower potassium, raising arrhythmia risk.
What this interaction means in plain words
Budesonide-formoterol and Haloperidol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Budesonide-formoterol belongs to Respiratory; Haloperidol belongs to Central Nervous System.
Why it happens
Additive QT prolongation, with beta-agonist-induced hypokalemia.
What to do
Check baseline ECG, potassium and magnesium, and monitor QTc during co-therapy. Use the lowest effective haloperidol dose and consider alternatives if QTc lengthens.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Budesonide-formoterol
Other interactions of Haloperidol
- Dofetilide + Haloperidol Contraindicated
- Dronedarone + Haloperidol Contraindicated
- Haloperidol + Ibutilide Contraindicated
- Haloperidol + Levoketoconazole Contraindicated
- Haloperidol + Panobinostat Contraindicated
- Haloperidol + Pimozide Contraindicated
Frequently asked questions
Can I take Budesonide-formoterol with Haloperidol?
MediHelp rates the interaction as major. Budesonide-formoterol and Haloperidol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Haloperidol is associated with QT prolongation and torsades de pointes, particularly at high doses or intravenously. Formoterol may add to the repolarisation effect and lower potassium, raising arrhythmia risk.
How serious is the interaction between Budesonide-formoterol and Haloperidol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check baseline ECG, potassium and magnesium, and monitor QTc during co-therapy. Use the lowest effective haloperidol dose and consider alternatives if QTc lengthens.
What other medicines interact with Budesonide-formoterol?
MediHelp also lists interactions of Budesonide-formoterol with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Budesonide-formoterol page.
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