Drug interactions
Fludrocortisone + Tolterodine
Severity: Minor
Fludrocortisone and Tolterodine: 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
There is no well-established clinical interaction between these drugs. Any induction of CYP3A4 by fludrocortisone is theoretical and unlikely to matter, since tolterodine is cleared mainly by CYP2D6.
What this interaction means in plain words
Fludrocortisone and Tolterodine 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; Tolterodine belongs to Genitourinary.
Why it happens
Theoretical weak CYP3A4 induction; not clinically established.
What to do
No action is needed beyond routine review of bladder symptom control.
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 Tolterodine
Other interactions of Fludrocortisone
Frequently asked questions
Can I take Fludrocortisone with Tolterodine?
MediHelp rates the interaction as minor. Fludrocortisone and Tolterodine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. There is no well-established clinical interaction between these drugs. Any induction of CYP3A4 by fludrocortisone is theoretical and unlikely to matter, since tolterodine is cleared mainly by CYP2D6.
How serious is the interaction between Fludrocortisone and Tolterodine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No action is needed beyond routine review of bladder symptom control.
What other medicines interact with Tolterodine?
MediHelp also lists interactions of Tolterodine with, for example, Clarithromycin, Clozapine, Cobicistat. The full list is on the Tolterodine page.
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