Drug interactions
Physostigmine + Rocuronium
Severity: Moderate
Physostigmine and Rocuronium: 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 is a cholinesterase inhibitor that increases acetylcholine at the neuromuscular junction and can antagonize rocuronium's blockade. It may produce unpredictable neuromuscular recovery and cholinergic effects such as bradycardia.
What this interaction means in plain words
Physostigmine and Rocuronium 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
Cholinesterase inhibition raises acetylcholine and opposes competitive nondepolarizing blockade.
What to do
Monitor neuromuscular function with train-of-four and watch for bradycardia and secretions. Use sugammadex or standard neostigmine-based reversal rather than physostigmine for rocuronium reversal.
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 Rocuronium
Frequently asked questions
Can I take Physostigmine with Rocuronium?
MediHelp rates the interaction as moderate. Physostigmine and Rocuronium 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 is a cholinesterase inhibitor that increases acetylcholine at the neuromuscular junction and can antagonize rocuronium's blockade. It may produce unpredictable neuromuscular recovery and cholinergic effects such as bradycardia.
How serious is the interaction between Physostigmine and Rocuronium?
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 neuromuscular function with train-of-four and watch for bradycardia and secretions. Use sugammadex or standard neostigmine-based reversal rather than physostigmine for rocuronium reversal.
What other medicines interact with Rocuronium?
MediHelp also lists interactions of Rocuronium with, for example, Amikacin, Bacitracin-neomycin-polymyxin, Capreomycin. The full list is on the Rocuronium page.
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