Drug interactions
Degarelix + Flecainide
Severity: Moderate
Degarelix and Flecainide: 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 such as degarelix can lengthen the QT interval, and flecainide adds to conduction and arrhythmic risk. The combination may increase the risk of torsades de pointes, especially in older patients with cardiac disease.
What this interaction means in plain words
Degarelix and Flecainide 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; Flecainide belongs to Cardiovascular.
Why it happens
Additive effects on QT interval through androgen deprivation and flecainide's ion channel blockade.
What to do
Obtain a baseline ECG and monitor periodically, keeping potassium and magnesium normal. Consider an alternative antiarrhythmic in patients with other QT 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 Flecainide
- Flecainide + Nirmatrelvir Contraindicated
- Flecainide + Nirmatrelvir / ritonavir Contraindicated
- Flecainide + Pimozide Contraindicated
- Flecainide + Ritonavir Contraindicated
- Flecainide + Thioridazine Contraindicated
- Flecainide + Tipranavir Contraindicated
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 Flecainide?
MediHelp rates the interaction as moderate. Degarelix and Flecainide 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 such as degarelix can lengthen the QT interval, and flecainide adds to conduction and arrhythmic risk. The combination may increase the risk of torsades de pointes, especially in older patients with cardiac disease.
How serious is the interaction between Degarelix and Flecainide?
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 monitor periodically, keeping potassium and magnesium normal. Consider an alternative antiarrhythmic in patients with other QT risk factors.
What other medicines interact with Flecainide?
MediHelp also lists interactions of Flecainide with, for example, Nirmatrelvir, Nirmatrelvir / ritonavir, Pimozide. The full list is on the Flecainide page.
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