Cisatracurium and Quinidine interaction

Cisatracurium and Quinidine: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.

Moderate

Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.

What the FDA labels say

From the Cisatracurium (Cisatracurium Besylate) label · effective 2026-06-30

Moderate

Potentiation of Neuromuscular Blockade Certain drugs may enhance the neuromuscular blocking action of Cisatracurium Besylate Injection including inhalational anesthetics, antibiotics, magnesium salts, lithium, local anesthetics, procainamide and quinidine [see Drug Interactions ( 7.1 )] .

Warnings and precautionsnames QuinidineView label on DailyMed
Moderate

Inhalational anesthetics, antibiotics, local anesthetics, magnesium salts, procainamide, lithium, quinidine : May potentiate or prolong neuromuscular blockade action of Cisatracurium Besylate Injection.

Drug interactionsnames QuinidineView label on DailyMed
Moderate

Antibiotics † Local anesthetics Magnesium salts Procainamide Lithium Quinidine May prolong the neuromuscular blockade action of Cisatracurium Besylate Injection Phenytoin, Carbamazepine May increase resistance to the neuromuscular blockade action of Cisatracurium Besylate Injection resulting in shorter durations of neuromuscular blockade and infusion rate requirements…

Drug interactionsnames QuinidineView label on DailyMed

From the Quinidine (Quinidine Gluconate) label · effective 2024-08-27

Moderate

Quinidine potentiates the actions of depolarizing (succinylcholine, decamethonium) and non-depolarizing ( d -tubocurarine, pancuronium) neuromuscular blocking agents .

Drug interactionsby drug classView label on DailyMed

Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.

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Not medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.