Drug interactions
Magnesium + Rocuronium
Severity: Major
Magnesium and Rocuronium: major 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
Parenteral magnesium sulfate potentiates rocuronium, shortening onset and lengthening duration of neuromuscular block. This raises the risk of delayed recovery and residual paralysis.
What this interaction means in plain words
Magnesium and Rocuronium can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Magnesium belongs to Gastrointestinal Tract; Rocuronium belongs to Musculoskeletal.
Why it happens
Magnesium inhibits presynaptic acetylcholine release and reduces end-plate sensitivity, adding to nondepolarizing blockade.
What to do
Use reduced rocuronium doses and monitor neuromuscular function with train-of-four. Confirm adequate reversal before extubation.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Magnesium
- Ciprofloxacin + Magnesium Major
- Magnesium + Pancuronium Major
- Magnesium + Vecuronium Major
- Amikacin + Magnesium Moderate
- Amphotericin b deoxycholate + Magnesium Moderate
- Atracurium + Magnesium Moderate
Other interactions of Rocuronium
Frequently asked questions
Can I take Magnesium with Rocuronium?
MediHelp rates the interaction as major. Magnesium and Rocuronium can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Parenteral magnesium sulfate potentiates rocuronium, shortening onset and lengthening duration of neuromuscular block. This raises the risk of delayed recovery and residual paralysis.
How serious is the interaction between Magnesium and Rocuronium?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use reduced rocuronium doses and monitor neuromuscular function with train-of-four. Confirm adequate reversal before extubation.
What other medicines interact with Magnesium?
MediHelp also lists interactions of Magnesium with, for example, Ciprofloxacin, Pancuronium, Vecuronium. The full list is on the Magnesium page.
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