Drug interactions
Nortriptyline + Osimertinib
Severity: Major
Nortriptyline and Osimertinib: 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
Osimertinib and nortriptyline can each prolong the QT interval, so their combination may further raise the chance of serious ventricular arrhythmias. The risk is greater with electrolyte disturbance or heart disease.
What this interaction means in plain words
Nortriptyline and Osimertinib 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.
Nortriptyline belongs to Central Nervous System; Osimertinib belongs to Oncology.
Why it happens
Additive QT interval prolongation.
What to do
Perform periodic ECG monitoring and check electrolytes, correcting potassium and magnesium. Switch to a non-QT-prolonging antidepressant if QTc rises significantly.
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 Nortriptyline
- Disopyramide + Nortriptyline Contraindicated
- Dofetilide + Nortriptyline Contraindicated
- Dronedarone + Nortriptyline Contraindicated
- Ibutilide + Nortriptyline Contraindicated
- Isocarboxazid + Nortriptyline Contraindicated
- Methylene blue + Nortriptyline Contraindicated
Other interactions of Osimertinib
Frequently asked questions
Can I take Nortriptyline with Osimertinib?
MediHelp rates the interaction as major. Nortriptyline and Osimertinib 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. Osimertinib and nortriptyline can each prolong the QT interval, so their combination may further raise the chance of serious ventricular arrhythmias. The risk is greater with electrolyte disturbance or heart disease.
How serious is the interaction between Nortriptyline and Osimertinib?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Perform periodic ECG monitoring and check electrolytes, correcting potassium and magnesium. Switch to a non-QT-prolonging antidepressant if QTc rises significantly.
What other medicines interact with Nortriptyline?
MediHelp also lists interactions of Nortriptyline with, for example, Disopyramide, Dofetilide, Dronedarone. The full list is on the Nortriptyline page.
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