Drug interactions
Degarelix + Granisetron
Severity: Moderate
Degarelix and Granisetron: 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 therapy with degarelix can lengthen the QT interval, and granisetron has a similar effect. Used together they may have an additive effect on repolarization and raise arrhythmia risk in susceptible patients.
What this interaction means in plain words
Degarelix and Granisetron 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.
Degarelix belongs to Endocrine; Granisetron belongs to Gastrointestinal Tract.
Why it happens
Additive QT prolongation, with granisetron acting on cardiac ion channels and androgen suppression altering repolarization.
What to do
Check baseline ECG and electrolytes, and repeat the ECG if other QT-prolonging drugs are present or symptoms such as syncope or palpitations occur. Use a different antiemetic in patients with a known long QT interval.
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 Granisetron
- Apomorphine + Granisetron Contraindicated
- Amiodarone + Granisetron Major
- Amisulpride + Granisetron Major
- Arsenic trioxide + Granisetron Major
- Artemether / lumefantrine + Granisetron Major
- Artemether + Granisetron Major
Other interactions of Degarelix
- Degarelix + Pimozide Contraindicated
- Degarelix + Thioridazine Contraindicated
- Amiodarone + Degarelix Major
- Amisulpride + Degarelix Major
- Anagrelide + Degarelix Major
- Cisapride + Degarelix Major
Frequently asked questions
Can I take Degarelix with Granisetron?
MediHelp rates the interaction as moderate. Degarelix and Granisetron 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 therapy with degarelix can lengthen the QT interval, and granisetron has a similar effect. Used together they may have an additive effect on repolarization and raise arrhythmia risk in susceptible patients.
How serious is the interaction between Degarelix and Granisetron?
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 baseline ECG and electrolytes, and repeat the ECG if other QT-prolonging drugs are present or symptoms such as syncope or palpitations occur. Use a different antiemetic in patients with a known long QT interval.
What other medicines interact with Granisetron?
MediHelp also lists interactions of Granisetron with, for example, Apomorphine, Amiodarone, Amisulpride. The full list is on the Granisetron page.
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