Drug interactions
Carvedilol + Physostigmine
Severity: Moderate
Carvedilol 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 acetylcholinesterase and enhances vagal tone, which can slow heart rate. With carvedilol, bradycardia and AV conduction delay may be additive.
What this interaction means in plain words
Carvedilol 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 effects from cholinergic stimulation and beta-blockade.
What to do
Monitor heart rate and ECG during physostigmine administration, and have atropine available to treat symptomatic bradycardia.
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 Carvedilol
Frequently asked questions
Can I take Carvedilol with Physostigmine?
MediHelp rates the interaction as moderate. Carvedilol 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 acetylcholinesterase and enhances vagal tone, which can slow heart rate. With carvedilol, bradycardia and AV conduction delay may be additive.
How serious is the interaction between Carvedilol 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, and have atropine available to treat symptomatic bradycardia.
What other medicines interact with Carvedilol?
MediHelp also lists interactions of Carvedilol with, for example, Amifostine, Amiodarone, Arformoterol. The full list is on the Carvedilol page.
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