Drug interactions
Budesonide-formoterol + Metaproterenol
Severity: Moderate
Budesonide-formoterol and Metaproterenol: 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
Combining formoterol with another beta-agonist such as metaproterenol adds beta-adrenergic stimulation. This can cause tachycardia, palpitations, tremor, raised blood pressure and a fall in serum potassium, with a higher arrhythmia risk in patients with heart disease.
What this interaction means in plain words
Budesonide-formoterol and Metaproterenol 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.
Why it happens
Additive beta-2 adrenergic receptor agonism causing cardiovascular stimulation and intracellular potassium shift.
What to do
Avoid routine concurrent use of two beta-agonists; if both are needed, monitor heart rate, blood pressure and serum potassium. Rationalise to a single short-acting rescue agent alongside the maintenance inhaler.
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 Budesonide-formoterol
Frequently asked questions
Can I take Budesonide-formoterol with Metaproterenol?
MediHelp rates the interaction as moderate. Budesonide-formoterol and Metaproterenol 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. Combining formoterol with another beta-agonist such as metaproterenol adds beta-adrenergic stimulation. This can cause tachycardia, palpitations, tremor, raised blood pressure and a fall in serum potassium, with a higher arrhythmia risk in patients with heart disease.
How serious is the interaction between Budesonide-formoterol and Metaproterenol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid routine concurrent use of two beta-agonists; if both are needed, monitor heart rate, blood pressure and serum potassium. Rationalise to a single short-acting rescue agent alongside the maintenance inhaler.
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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