Drug interactions
Neostigmine + Rapacuronium
Severity: Minor
Neostigmine and Rapacuronium: minor 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
Neostigmine reverses the effect of nondepolarizing neuromuscular blockers like rapacuronium by increasing acetylcholine at the neuromuscular junction. This is the intended basis of reversal, but the interaction is not a harmful one in that context. Rapacuronium is no longer marketed because of fatal bronchospasm.
What this interaction means in plain words
Neostigmine and Rapacuronium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Cholinesterase inhibition by neostigmine increases acetylcholine, which competitively overcomes the nicotinic receptor blockade produced by rapacuronium.
What to do
This is an expected pharmacologic reversal. Confirm recovery of neuromuscular function with train-of-four monitoring before extubation, and give an antimuscarinic such as glycopyrrolate to limit cholinergic side effects.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Neostigmine and Rapacuronium, 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 14 days on the web. No card needed.
Other interactions of Neostigmine
Frequently asked questions
Can I take Neostigmine with Rapacuronium?
MediHelp rates the interaction as minor. Neostigmine and Rapacuronium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Neostigmine reverses the effect of nondepolarizing neuromuscular blockers like rapacuronium by increasing acetylcholine at the neuromuscular junction. This is the intended basis of reversal, but the interaction is not a harmful one in that context. Rapacuronium is no longer marketed because of fatal bronchospasm.
How serious is the interaction between Neostigmine and Rapacuronium?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: This is an expected pharmacologic reversal. Confirm recovery of neuromuscular function with train-of-four monitoring before extubation, and give an antimuscarinic such as glycopyrrolate to limit cholinergic side effects.
What other medicines interact with Neostigmine?
MediHelp also lists interactions of Neostigmine with, for example, Huperzine a, Physostigmine, Pyridostigmine. The full list is on the Neostigmine 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.
