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Drug interactions

Cisatracurium + Magnesium sulphate

Severity: Moderate

Cisatracurium and Magnesium sulphate: 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 enhances the effect of cisatracurium, leading to a deeper and longer neuromuscular block. Delayed recovery may prolong ventilatory support.

What this interaction means in plain words

Cisatracurium and Magnesium sulphate 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.

Cisatracurium belongs to Musculoskeletal; Magnesium sulphate belongs to Cardiovascular.

Evidence level: High

Why it happens

Magnesium decreases presynaptic acetylcholine release and reduces postjunctional sensitivity, adding to competitive neuromuscular blockade.

What to do

Use reduced cisatracurium doses and monitor neuromuscular function with train-of-four. Anticipate prolonged recovery.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Cisatracurium with Magnesium sulphate?

MediHelp rates the interaction as moderate. Cisatracurium and Magnesium sulphate 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 enhances the effect of cisatracurium, leading to a deeper and longer neuromuscular block. Delayed recovery may prolong ventilatory support.

How serious is the interaction between Cisatracurium and Magnesium sulphate?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use reduced cisatracurium doses and monitor neuromuscular function with train-of-four. Anticipate prolonged recovery.

What other medicines interact with Magnesium sulphate?

MediHelp also lists interactions of Magnesium sulphate with, for example, Amikacin, Amphotericin b deoxycholate, Atracurium. The full list is on the Magnesium sulphate page.

Full monographs, dosing and an interaction checker in the MediHelp app

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