Drug interactions
Succinylcholine + Vecuronium
Severity: Moderate
Succinylcholine and Vecuronium: 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
Succinylcholine given before vecuronium can enhance and prolong non-depolarizing blockade, and the onset of the blocker may be quickened. Giving vecuronium before succinylcholine, as in a defasciculating dose, may reduce or alter the depolarizing block.
What this interaction means in plain words
Succinylcholine and Vecuronium 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.
Succinylcholine belongs to Musculoskeletal; Vecuronium belongs to Musculoskeletal.
Why it happens
Depolarizing and non-depolarizing agents act at the same nicotinic receptors, giving pharmacodynamic interaction dependent on sequence and phase of block.
What to do
Allow succinylcholine effects to wane before giving vecuronium, and reduce vecuronium dose. Monitor neuromuscular function with train-of-four.
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 Vecuronium
Other interactions of Succinylcholine
Frequently asked questions
Can I take Succinylcholine with Vecuronium?
MediHelp rates the interaction as moderate. Succinylcholine and Vecuronium 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. Succinylcholine given before vecuronium can enhance and prolong non-depolarizing blockade, and the onset of the blocker may be quickened. Giving vecuronium before succinylcholine, as in a defasciculating dose, may reduce or alter the depolarizing block.
How serious is the interaction between Succinylcholine and Vecuronium?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Allow succinylcholine effects to wane before giving vecuronium, and reduce vecuronium dose. Monitor neuromuscular function with train-of-four.
What other medicines interact with Vecuronium?
MediHelp also lists interactions of Vecuronium with, for example, Amikacin, Bacitracin-neomycin-polymyxin, Capreomycin. The full list is on the Vecuronium page.
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