Drug interactions
Flecainide + Salbutamol
Severity: Moderate
Flecainide and Salbutamol: 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
Flecainide is a class IC antiarrhythmic with proarrhythmic potential, and salbutamol can induce tachycardia and hypokalemia. Hypokalemia and increased adrenergic drive may raise the risk of ventricular arrhythmias.
What this interaction means in plain words
Flecainide and Salbutamol 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.
Flecainide belongs to Cardiovascular; Salbutamol belongs to Respiratory.
Why it happens
Additive pro-arrhythmic effects, with beta-2 agonist-induced hypokalemia and sympathetic stimulation increasing susceptibility to flecainide toxicity.
What to do
Monitor ECG and serum potassium and correct hypokalemia. Prefer the lowest effective salbutamol dose and reassess therapy if arrhythmia occurs.
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 Salbutamol
Other interactions of Flecainide
- Flecainide + Nirmatrelvir Contraindicated
- Flecainide + Nirmatrelvir / ritonavir Contraindicated
- Flecainide + Pimozide Contraindicated
- Flecainide + Ritonavir Contraindicated
- Flecainide + Thioridazine Contraindicated
- Flecainide + Tipranavir Contraindicated
Frequently asked questions
Can I take Flecainide with Salbutamol?
MediHelp rates the interaction as moderate. Flecainide and Salbutamol 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. Flecainide is a class IC antiarrhythmic with proarrhythmic potential, and salbutamol can induce tachycardia and hypokalemia. Hypokalemia and increased adrenergic drive may raise the risk of ventricular arrhythmias.
How serious is the interaction between Flecainide and Salbutamol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor ECG and serum potassium and correct hypokalemia. Prefer the lowest effective salbutamol dose and reassess therapy if arrhythmia occurs.
What other medicines interact with Salbutamol?
MediHelp also lists interactions of Salbutamol with, for example, Arsenic trioxide, Carvedilol, Droperidol. The full list is on the Salbutamol page.
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