Drug interactions
Atenolol + Epinephrine racemic
Severity: Moderate
Atenolol and Epinephrine racemic: 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
Atenolol can blunt the beta-mediated effects of racemic epinephrine, such as bronchodilation. Unopposed alpha-adrenergic stimulation may produce marked hypertension with reflex bradycardia, which is less likely but possible with a cardioselective agent at higher doses.
What this interaction means in plain words
Atenolol and Epinephrine racemic 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
Pharmacodynamic antagonism at beta receptors with unopposed alpha-adrenergic vasoconstriction.
What to do
Monitor blood pressure, heart rate and respiratory response; be aware that higher epinephrine doses may be needed in anaphylaxis, with glucagon as an option for refractory cases.
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 Atenolol
- Amifostine + Atenolol Major
- Amiodarone + Atenolol Major
- Atenolol + Atenolol-chlorthalidone Major
- Atenolol + Betaxolol Major
- Atenolol + Bisoprolol Major
- Atenolol + Carvedilol Major
Frequently asked questions
Can I take Atenolol with Epinephrine racemic?
MediHelp rates the interaction as moderate. Atenolol and Epinephrine racemic 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. Atenolol can blunt the beta-mediated effects of racemic epinephrine, such as bronchodilation. Unopposed alpha-adrenergic stimulation may produce marked hypertension with reflex bradycardia, which is less likely but possible with a cardioselective agent at higher doses.
How serious is the interaction between Atenolol and Epinephrine racemic?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, heart rate and respiratory response; be aware that higher epinephrine doses may be needed in anaphylaxis, with glucagon as an option for refractory cases.
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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