Drug interactions
Betaxolol + Epinephrine racemic
Severity: Major
Betaxolol and Epinephrine racemic: major interaction.
Last updated Sources: UK SmPC
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
Betaxolol antagonizes the beta effects of epinephrine, which may reduce bronchodilator and cardiac effects. Unopposed alpha stimulation can cause marked hypertension and reflex bradycardia.
What this interaction means in plain words
Betaxolol and Epinephrine racemic 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
Beta-receptor blockade leaves epinephrine's alpha-adrenergic vasoconstriction unopposed.
What to do
Monitor blood pressure and heart rate closely when epinephrine is given systemically. Be prepared to treat hypertension or bradycardia, and consider glucagon if anaphylaxis is unresponsive.
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 Betaxolol
- Acebutolol + Betaxolol Major
- Aldesleukin + Betaxolol Major
- Amifostine + Betaxolol Major
- Amiodarone + Betaxolol Major
- Atenolol-chlorthalidone + Betaxolol Major
- Atenolol + Betaxolol Major
Frequently asked questions
Can I take Betaxolol with Epinephrine racemic?
MediHelp rates the interaction as major. Betaxolol and Epinephrine racemic 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. Betaxolol antagonizes the beta effects of epinephrine, which may reduce bronchodilator and cardiac effects. Unopposed alpha stimulation can cause marked hypertension and reflex bradycardia.
How serious is the interaction between Betaxolol and Epinephrine racemic?
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 closely when epinephrine is given systemically. Be prepared to treat hypertension or bradycardia, and consider glucagon if anaphylaxis is unresponsive.
What other medicines interact with Betaxolol?
MediHelp also lists interactions of Betaxolol with, for example, Acebutolol, Aldesleukin, Amifostine. The full list is on the Betaxolol page.
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