Drug interactions
Flecainide + Osilodrostat
Severity: Moderate
Flecainide and Osilodrostat: 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
Osilodrostat can prolong the QT interval and may add to flecainide's proarrhythmic effect. Hypokalemia from cortisol suppression with adrenal effects may increase risk.
What this interaction means in plain words
Flecainide and Osilodrostat 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.
Flecainide belongs to Cardiovascular; Osilodrostat belongs to Endocrine.
Why it happens
Additive QT prolongation.
What to do
Obtain a baseline ECG and monitor periodically, with potassium and magnesium correction.
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 Osilodrostat
Frequently asked questions
Can I take Flecainide with Osilodrostat?
MediHelp rates the interaction as moderate. Flecainide and Osilodrostat 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. Osilodrostat can prolong the QT interval and may add to flecainide's proarrhythmic effect. Hypokalemia from cortisol suppression with adrenal effects may increase risk.
How serious is the interaction between Flecainide and Osilodrostat?
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, with potassium and magnesium correction.
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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