Drug interactions
Bisoprolol + Isoproterenol
Severity: Major
Bisoprolol 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
Bisoprolol antagonizes the beta-adrenergic effects of isoproterenol, reducing its chronotropic, inotropic and bronchodilating effect. Higher isoproterenol doses may be required, with a risk of unpredictable hemodynamic responses.
What this interaction means in plain words
Bisoprolol 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.
Bisoprolol belongs to Cardiovascular; Isoproterenol belongs to Respiratory.
Why it happens
Competitive antagonism at beta-adrenergic receptors.
What to do
Monitor heart rate, blood pressure and clinical response and titrate isoproterenol carefully; consider alternative strategies if a beta-agonist effect is essential.
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 Bisoprolol
Other interactions of Isoproterenol
Frequently asked questions
Can I take Bisoprolol with Isoproterenol?
MediHelp rates the interaction as major. Bisoprolol 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. Bisoprolol antagonizes the beta-adrenergic effects of isoproterenol, reducing its chronotropic, inotropic and bronchodilating effect. Higher isoproterenol doses may be required, with a risk of unpredictable hemodynamic responses.
How serious is the interaction between Bisoprolol 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: Monitor heart rate, blood pressure and clinical response and titrate isoproterenol carefully; consider alternative strategies if a beta-agonist effect is essential.
What other medicines interact with Bisoprolol?
MediHelp also lists interactions of Bisoprolol with, for example, Aldesleukin, Amifostine, Amiodarone. The full list is on the Bisoprolol page.
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