Drug interactions
Selpercatinib + Trimipramine
Severity: Major
Selpercatinib and Trimipramine: 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
Both agents can prolong the QT interval, so using them together raises the risk of ventricular arrhythmia including torsades de pointes. Risk is higher with electrolyte disturbances or heart disease.
What this interaction means in plain words
Selpercatinib and Trimipramine 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; Trimipramine belongs to Central Nervous System.
Why it happens
Additive prolongation of cardiac repolarization (QTc).
What to do
Monitor ECG and electrolytes at baseline and periodically, and correct potassium and magnesium deficits. Prefer a non-QT-prolonging antidepressant where possible.
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 Trimipramine
- Disopyramide + Trimipramine Contraindicated
- Dofetilide + Trimipramine Contraindicated
- Ibutilide + Trimipramine Contraindicated
- Isocarboxazid + Trimipramine Contraindicated
- Pentamidine + Trimipramine Contraindicated
- Phenelzine + Trimipramine Contraindicated
Other interactions of Selpercatinib
Frequently asked questions
Can I take Selpercatinib with Trimipramine?
MediHelp rates the interaction as major. Selpercatinib and Trimipramine 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. Both agents can prolong the QT interval, so using them together raises the risk of ventricular arrhythmia including torsades de pointes. Risk is higher with electrolyte disturbances or heart disease.
How serious is the interaction between Selpercatinib and Trimipramine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor ECG and electrolytes at baseline and periodically, and correct potassium and magnesium deficits. Prefer a non-QT-prolonging antidepressant where possible.
What other medicines interact with Trimipramine?
MediHelp also lists interactions of Trimipramine with, for example, Disopyramide, Dofetilide, Ibutilide. The full list is on the Trimipramine page.
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