Drug interactions
Betaxolol + Physostigmine
Severity: Moderate
Betaxolol and Physostigmine: 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
Physostigmine inhibits cholinesterase and increases vagal tone, while betaxolol reduces heart rate and AV conduction. Together they may cause significant bradycardia or heart block.
What this interaction means in plain words
Betaxolol and Physostigmine 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 negative chronotropic and dromotropic effects from cholinergic stimulation and beta blockade.
What to do
Monitor heart rate and ECG during physostigmine administration. Have atropine available.
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 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 Physostigmine?
MediHelp rates the interaction as moderate. Betaxolol and Physostigmine 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. Physostigmine inhibits cholinesterase and increases vagal tone, while betaxolol reduces heart rate and AV conduction. Together they may cause significant bradycardia or heart block.
How serious is the interaction between Betaxolol and Physostigmine?
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 heart rate and ECG during physostigmine administration. Have atropine available.
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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