Drug interactions
Magnesium sulfate + Rocuronium
Severity: Moderate
Magnesium sulfate 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
Parenteral magnesium sulfate potentiates nondepolarizing blockers, which can shorten onset and prolong the duration of rocuronium. This may delay recovery and cause residual weakness or respiratory compromise.
What this interaction means in plain words
Magnesium sulfate 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
Magnesium reduces presynaptic acetylcholine release and decreases postsynaptic sensitivity, adding to rocuronium's nicotinic receptor blockade.
What to do
Reduce rocuronium dose and titrate by train-of-four monitoring in patients receiving magnesium. Confirm full recovery before extubation and consider sugammadex for 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 Magnesium sulfate with Rocuronium?
MediHelp rates the interaction as moderate. Magnesium sulfate 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. Parenteral magnesium sulfate potentiates nondepolarizing blockers, which can shorten onset and prolong the duration of rocuronium. This may delay recovery and cause residual weakness or respiratory compromise.
How serious is the interaction between Magnesium sulfate 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: Reduce rocuronium dose and titrate by train-of-four monitoring in patients receiving magnesium. Confirm full recovery before extubation and consider sugammadex for 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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