Drug interactions
Epinephrine racemic + Isoproterenol
Severity: Major
Epinephrine racemic 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 are catecholamine sympathomimetics, so combining them can cause excessive tachycardia, hypertension and ventricular arrhythmias. Beta-2 stimulation may also cause a fall in serum potassium.
What this interaction means in plain words
Epinephrine racemic 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.
Why it happens
Additive stimulation of alpha and beta adrenergic receptors, with beta-2 mediated cellular potassium uptake.
What to do
Avoid concurrent use unless clearly needed, and monitor ECG, blood pressure and potassium continuously if combined. Reduce doses and treat arrhythmias promptly.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Epinephrine racemic and Isoproterenol, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
Other interactions of Isoproterenol
Frequently asked questions
Can I take Epinephrine racemic with Isoproterenol?
MediHelp rates the interaction as major. Epinephrine racemic 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 are catecholamine sympathomimetics, so combining them can cause excessive tachycardia, hypertension and ventricular arrhythmias. Beta-2 stimulation may also cause a fall in serum potassium.
How serious is the interaction between Epinephrine racemic 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 unless clearly needed, and monitor ECG, blood pressure and potassium continuously if combined. Reduce doses and treat arrhythmias promptly.
What other medicines interact with Isoproterenol?
MediHelp also lists interactions of Isoproterenol with, for example, Adrenaline-articaine, Bisoprolol, Budesonide-formoterol. The full list is on the Isoproterenol page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
