Drug interactions
Selpercatinib + Sevoflurane
Severity: Major
Selpercatinib and Sevoflurane: major 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
Selpercatinib can prolong the QT interval, and sevoflurane may add to it. The combination may raise the risk of torsades de pointes.
What this interaction means in plain words
Selpercatinib and Sevoflurane can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Selpercatinib belongs to Oncology; Sevoflurane belongs to Central Nervous System.
Why it happens
Additive prolongation of cardiac repolarization.
What to do
Check a baseline ECG and correct potassium, magnesium and calcium before anesthesia. Monitor the ECG perioperatively and avoid other QT-prolonging drugs.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Sevoflurane
Other interactions of Selpercatinib
Frequently asked questions
Can I take Selpercatinib with Sevoflurane?
MediHelp rates the interaction as major. Selpercatinib and Sevoflurane can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Selpercatinib can prolong the QT interval, and sevoflurane may add to it. The combination may raise the risk of torsades de pointes.
How serious is the interaction between Selpercatinib and Sevoflurane?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check a baseline ECG and correct potassium, magnesium and calcium before anesthesia. Monitor the ECG perioperatively and avoid other QT-prolonging drugs.
What other medicines interact with Sevoflurane?
MediHelp also lists interactions of Sevoflurane with, for example, Amiodarone, Amisulpride, Arsenic trioxide. The full list is on the Sevoflurane page.
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