Drug interactions
Dexamethasone + Tolterodine
Severity: Minor
Dexamethasone 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
Dexamethasone is a weak to moderate CYP3A4 inducer and may lower tolterodine concentrations. The effect on the active moiety is likely small, particularly in people with normal CYP2D6 activity.
What this interaction means in plain words
Dexamethasone 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.
Dexamethasone belongs to Endocrine; Tolterodine belongs to Genitourinary.
Why it happens
Dexamethasone induction of CYP3A4 increases tolterodine clearance.
What to do
No routine adjustment. Reassess symptom control if tolterodine response diminishes during prolonged dexamethasone therapy.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dexamethasone and Tolterodine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Tolterodine
Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Dexamethasone with Tolterodine?
MediHelp rates the interaction as minor. Dexamethasone 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. Dexamethasone is a weak to moderate CYP3A4 inducer and may lower tolterodine concentrations. The effect on the active moiety is likely small, particularly in people with normal CYP2D6 activity.
How serious is the interaction between Dexamethasone 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 routine adjustment. Reassess symptom control if tolterodine response diminishes during prolonged dexamethasone therapy.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
