Drug interactions
Betaxolol + Bretylium
Severity: Moderate
Betaxolol and Bretylium: 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
Bretylium causes hypotension through adrenergic neuron blockade, and betaxolol also lowers blood pressure and heart rate. Combined use may produce pronounced hypotension or bradycardia.
What this interaction means in plain words
Betaxolol and Bretylium 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
Additive sympatholytic effects.
What to do
Monitor blood pressure and ECG continuously during bretylium use, and adjust doses or support circulation as needed.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Betaxolol and Bretylium, 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 7 days on the web. No card needed.
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 Bretylium?
MediHelp rates the interaction as moderate. Betaxolol and Bretylium 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. Bretylium causes hypotension through adrenergic neuron blockade, and betaxolol also lowers blood pressure and heart rate. Combined use may produce pronounced hypotension or bradycardia.
How serious is the interaction between Betaxolol and Bretylium?
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 and ECG continuously during bretylium use, and adjust doses or support circulation as needed.
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.
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.
