Drug interactions
Ipratropium-salbutamol + Isoproterenol
Severity: Major
Ipratropium-salbutamol and Isoproterenol: 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
Both drugs are beta-adrenergic agonists, so combining them produces additive tachycardia, palpitations, tremor, hypertension or hypotension, and lowering of potassium. Arrhythmia risk increases, especially in patients with heart disease or hypokalemia. Using two agonists together adds little bronchodilator benefit.
What this interaction means in plain words
Ipratropium-salbutamol and Isoproterenol 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.
Ipratropium-salbutamol belongs to Respiratory; Isoproterenol belongs to Respiratory.
Why it happens
Additive beta-adrenergic receptor stimulation causing cardiac stimulation and intracellular potassium shift.
What to do
Avoid concurrent use of systemic isoproterenol and salbutamol where possible. If both are needed, monitor ECG, heart rate, blood pressure and serum potassium.
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 Ipratropium-salbutamol
Other interactions of Isoproterenol
Frequently asked questions
Can I take Ipratropium-salbutamol with Isoproterenol?
MediHelp rates the interaction as major. Ipratropium-salbutamol and Isoproterenol 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. Both drugs are beta-adrenergic agonists, so combining them produces additive tachycardia, palpitations, tremor, hypertension or hypotension, and lowering of potassium. Arrhythmia risk increases, especially in patients with heart disease or hypokalemia. Using two agonists together adds little bronchodilator benefit.
How serious is the interaction between Ipratropium-salbutamol and Isoproterenol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use of systemic isoproterenol and salbutamol where possible. If both are needed, monitor ECG, heart rate, blood pressure and serum potassium.
What other medicines interact with Ipratropium-salbutamol?
MediHelp also lists interactions of Ipratropium-salbutamol with, for example, Amisulpride, Arsenic trioxide, Carvedilol. The full list is on the Ipratropium-salbutamol page.
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