Drug interactions
Sevoflurane + Succinylcholine
Severity: Moderate
Sevoflurane and Succinylcholine: 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
Volatile anesthetics such as sevoflurane enhance neuromuscular blockade and may prolong succinylcholine effects, particularly phase II block with repeated dosing. Both agents are also triggers for malignant hyperthermia in susceptible patients, which is the more serious concern. They are commonly used together with careful monitoring.
What this interaction means in plain words
Sevoflurane and Succinylcholine 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.
Sevoflurane belongs to Central Nervous System; Succinylcholine belongs to Musculoskeletal.
Why it happens
Volatile anesthetics reduce neuromuscular junction sensitivity to acetylcholine, adding to depolarizing blockade; both are malignant hyperthermia triggers.
What to do
Monitor neuromuscular function and titrate succinylcholine to effect. Avoid both agents in patients susceptible to malignant hyperthermia.
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 Succinylcholine
Other interactions of Sevoflurane
Frequently asked questions
Can I take Sevoflurane with Succinylcholine?
MediHelp rates the interaction as moderate. Sevoflurane and Succinylcholine 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. Volatile anesthetics such as sevoflurane enhance neuromuscular blockade and may prolong succinylcholine effects, particularly phase II block with repeated dosing. Both agents are also triggers for malignant hyperthermia in susceptible patients, which is the more serious concern. They are commonly used together with careful monitoring.
How serious is the interaction between Sevoflurane and Succinylcholine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor neuromuscular function and titrate succinylcholine to effect. Avoid both agents in patients susceptible to malignant hyperthermia.
What other medicines interact with Succinylcholine?
MediHelp also lists interactions of Succinylcholine with, for example, Amikacin, Bacitracin-neomycin-polymyxin, Capreomycin. The full list is on the Succinylcholine page.
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