Drug interactions
Budesonide-formoterol + Procainamide
Severity: Major
Budesonide-formoterol and Procainamide: 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
Procainamide prolongs repolarization and can cause torsades de pointes, and formoterol may add to this effect and lower potassium. The combination raises proarrhythmic risk.
What this interaction means in plain words
Budesonide-formoterol and Procainamide 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.
Why it happens
Additive QTc prolongation, with beta-agonist induced hypokalemia.
What to do
Monitor ECG and keep potassium and magnesium normal. Consider an alternative bronchodilator 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
Frequently asked questions
Can I take Budesonide-formoterol with Procainamide?
MediHelp rates the interaction as major. Budesonide-formoterol and Procainamide 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. Procainamide prolongs repolarization and can cause torsades de pointes, and formoterol may add to this effect and lower potassium. The combination raises proarrhythmic risk.
How serious is the interaction between Budesonide-formoterol and Procainamide?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor ECG and keep potassium and magnesium normal. Consider an alternative bronchodilator 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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