Drug interactions
Isoflurane + Selpercatinib
Severity: Moderate
Isoflurane and Selpercatinib: 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
Selpercatinib can prolong the QT interval, and isoflurane may further lengthen it. Together they may raise the risk of torsades de pointes, especially with electrolyte abnormalities.
What this interaction means in plain words
Isoflurane and Selpercatinib 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.
Isoflurane belongs to Central Nervous System; Selpercatinib belongs to Oncology.
Why it happens
Additive prolongation of ventricular repolarization (QTc).
What to do
Check a baseline ECG and correct potassium, magnesium and calcium before anesthesia. Monitor the ECG during and after the procedure.
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 Isoflurane
Other interactions of Selpercatinib
Frequently asked questions
Can I take Isoflurane with Selpercatinib?
MediHelp rates the interaction as moderate. Isoflurane and Selpercatinib 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. Selpercatinib can prolong the QT interval, and isoflurane may further lengthen it. Together they may raise the risk of torsades de pointes, especially with electrolyte abnormalities.
How serious is the interaction between Isoflurane and Selpercatinib?
MediHelp rates it moderate, 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 during and after the procedure.
What other medicines interact with Isoflurane?
MediHelp also lists interactions of Isoflurane with, for example, Adrenaline-articaine, Amisulpride, Arsenic trioxide. The full list is on the Isoflurane page.
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