Drug interactions
Magnesium supplement + Rocuronium
Severity: Minor
Magnesium supplement and Rocuronium: 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
Oral magnesium supplements are poorly absorbed at usual doses and rarely raise serum magnesium enough to affect neuromuscular blockade. Significant potentiation of rocuronium would mainly occur with hypermagnesemia, for example in renal impairment or high doses.
What this interaction means in plain words
Magnesium supplement and Rocuronium 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
Elevated serum magnesium reduces acetylcholine release and could add to rocuronium blockade, but this is only likely with hypermagnesemia.
What to do
Check serum magnesium in patients with renal impairment or high-dose supplementation before surgery, and titrate rocuronium with train-of-four monitoring.
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?
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Other interactions of Rocuronium
Frequently asked questions
Can I take Magnesium supplement with Rocuronium?
MediHelp rates the interaction as minor. Magnesium supplement and Rocuronium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Oral magnesium supplements are poorly absorbed at usual doses and rarely raise serum magnesium enough to affect neuromuscular blockade. Significant potentiation of rocuronium would mainly occur with hypermagnesemia, for example in renal impairment or high doses.
How serious is the interaction between Magnesium supplement and Rocuronium?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum magnesium in patients with renal impairment or high-dose supplementation before surgery, and titrate rocuronium with train-of-four monitoring.
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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