Drug interactions
Atenolol + Epinephrine
Severity: Major
Atenolol and Epinephrine: major interaction.
Last updated Sources: US FDA label
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
Beta-blockade antagonizes the cardiac and bronchodilator effects of epinephrine, leaving alpha-mediated vasoconstriction unopposed. This may cause hypertension with reflex bradycardia and reduced response in anaphylaxis, though atenolol is cardioselective and less affected than nonselective agents.
What this interaction means in plain words
Atenolol and Epinephrine 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.
Atenolol belongs to Cardiovascular; Epinephrine belongs to Endocrine.
Why it happens
Beta-adrenergic antagonism with unopposed alpha-adrenergic stimulation.
What to do
Monitor blood pressure and heart rate, and in refractory anaphylaxis in a beta-blocked patient consider glucagon alongside epinephrine.
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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References
Other interactions of Atenolol
- Amifostine + Atenolol Major
- Amiodarone + Atenolol Major
- Atenolol + Atenolol-chlorthalidone Major
- Atenolol + Betaxolol Major
- Atenolol + Bisoprolol Major
- Atenolol + Carvedilol Major
Other interactions of Epinephrine
- Epinephrine + Isocarboxazid Contraindicated
- Epinephrine + Phenelzine Contraindicated
- Epinephrine + Tranylcypromine Contraindicated
- Acebutolol + Epinephrine Major
- Amitriptyline + Epinephrine Major
- Amoxapine + Epinephrine Major
Frequently asked questions
Can I take Atenolol with Epinephrine?
MediHelp rates the interaction as major. Atenolol and Epinephrine 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. Beta-blockade antagonizes the cardiac and bronchodilator effects of epinephrine, leaving alpha-mediated vasoconstriction unopposed. This may cause hypertension with reflex bradycardia and reduced response in anaphylaxis, though atenolol is cardioselective and less affected than nonselective agents.
How serious is the interaction between Atenolol and Epinephrine?
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 blood pressure and heart rate, and in refractory anaphylaxis in a beta-blocked patient consider glucagon alongside epinephrine.
What other medicines interact with Atenolol?
MediHelp also lists interactions of Atenolol with, for example, Amifostine, Amiodarone, Atenolol-chlorthalidone. The full list is on the Atenolol page.
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