Drug interactions
Ondansetron + Triptorelin
Severity: Moderate
Ondansetron 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
Androgen deprivation with triptorelin may prolong the QT interval, and ondansetron has a similar effect. Combined use could increase the risk of torsades de pointes in susceptible patients.
What this interaction means in plain words
Ondansetron 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.
Ondansetron belongs to Gastrointestinal Tract; Triptorelin belongs to Endocrine.
Why it happens
Additive QTc prolongation, with hypogonadism from GnRH agonism altering cardiac repolarization.
What to do
Obtain a baseline ECG and electrolytes, and monitor the QTc in patients with cardiac risk factors.
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 Ondansetron
- Apomorphine + Ondansetron Contraindicated
- Ondansetron + Thioridazine Contraindicated
- Ondansetron + Vandetanib Contraindicated
- Adagrasib + Ondansetron Major
- Amiodarone + Ondansetron Major
- Amisulpride + Ondansetron Major
Other interactions of Triptorelin
Frequently asked questions
Can I take Ondansetron with Triptorelin?
MediHelp rates the interaction as moderate. Ondansetron 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. Androgen deprivation with triptorelin may prolong the QT interval, and ondansetron has a similar effect. Combined use could increase the risk of torsades de pointes in susceptible patients.
How serious is the interaction between Ondansetron 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 electrolytes, and monitor the QTc in patients with cardiac risk factors.
What other medicines interact with Ondansetron?
MediHelp also lists interactions of Ondansetron with, for example, Apomorphine, Thioridazine, Vandetanib. The full list is on the Ondansetron page.
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