Drug interactions
Osimertinib + Triptorelin
Severity: Moderate
Osimertinib and Triptorelin: 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
Triptorelin, a GnRH agonist used for androgen deprivation, can prolong the QT interval. Osimertinib can also prolong the QTc, so using both may add to the risk of ventricular arrhythmias including torsades de pointes, particularly with electrolyte disturbances or heart disease.
What this interaction means in plain words
Osimertinib and Triptorelin 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.
Osimertinib belongs to Oncology; Triptorelin belongs to Endocrine.
Why it happens
Additive QT prolongation through pharmacodynamic effects on cardiac repolarization.
What to do
Obtain a baseline ECG and correct potassium, magnesium and calcium before starting. Repeat ECG and electrolytes periodically, and stop or reduce osimertinib if QTc becomes markedly prolonged.
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 Triptorelin
Other interactions of Osimertinib
Frequently asked questions
Can I take Osimertinib with Triptorelin?
MediHelp rates the interaction as moderate. Osimertinib and Triptorelin 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. Triptorelin, a GnRH agonist used for androgen deprivation, can prolong the QT interval. Osimertinib can also prolong the QTc, so using both may add to the risk of ventricular arrhythmias including torsades de pointes, particularly with electrolyte disturbances or heart disease.
How serious is the interaction between Osimertinib and Triptorelin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and correct potassium, magnesium and calcium before starting. Repeat ECG and electrolytes periodically, and stop or reduce osimertinib if QTc becomes markedly prolonged.
What other medicines interact with Triptorelin?
MediHelp also lists interactions of Triptorelin with, for example, Amisulpride, Arsenic trioxide, Bedaquiline. The full list is on the Triptorelin page.
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