Drug interactions
Fludrocortisone + Propafenone
Severity: Minor
Fludrocortisone and Propafenone: minor 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
No clinically meaningful pharmacokinetic interaction is established; any CYP3A4 induction by fludrocortisone is theoretical. Fludrocortisone can cause hypokalemia, which may increase proarrhythmic risk with propafenone.
What this interaction means in plain words
Fludrocortisone and Propafenone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Fludrocortisone belongs to Endocrine; Propafenone belongs to Cardiovascular.
Why it happens
Theoretical CYP3A4 induction; fludrocortisone-related potassium loss may add pharmacodynamic proarrhythmic risk.
What to do
Monitor serum potassium and correct hypokalemia in patients on both drugs. No propafenone dose change is routinely needed.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Propafenone
- Dofetilide + Propafenone Contraindicated
- Dronedarone + Propafenone Contraindicated
- Nilotinib + Propafenone Contraindicated
- Nirmatrelvir / ritonavir + Propafenone Contraindicated
- Nirmatrelvir + Propafenone Contraindicated
- Pimozide + Propafenone Contraindicated
Other interactions of Fludrocortisone
Frequently asked questions
Can I take Fludrocortisone with Propafenone?
MediHelp rates the interaction as minor. Fludrocortisone and Propafenone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. No clinically meaningful pharmacokinetic interaction is established; any CYP3A4 induction by fludrocortisone is theoretical. Fludrocortisone can cause hypokalemia, which may increase proarrhythmic risk with propafenone.
How serious is the interaction between Fludrocortisone and Propafenone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium and correct hypokalemia in patients on both drugs. No propafenone dose change is routinely needed.
What other medicines interact with Propafenone?
MediHelp also lists interactions of Propafenone with, for example, Dofetilide, Dronedarone, Nilotinib. The full list is on the Propafenone page.
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