Drug interactions
Oxcarbazepine + Tolterodine
Severity: Minor
Oxcarbazepine 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
Oxcarbazepine is a weak CYP3A4 inducer and may modestly lower tolterodine exposure, mostly relevant in CYP2D6 poor metabolizers. Reduced antimuscarinic efficacy is possible but usually mild.
What this interaction means in plain words
Oxcarbazepine 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.
Oxcarbazepine belongs to Central Nervous System; Tolterodine belongs to Genitourinary.
Why it happens
Weak CYP3A4 induction increases the metabolism of tolterodine.
What to do
Assess bladder symptom control and increase the tolterodine dose only if response is inadequate.
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 Oxcarbazepine 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 14 days on the web. No card needed.
Other interactions of Tolterodine
Other interactions of Oxcarbazepine
- Cabotegravir + Oxcarbazepine Contraindicated
- Oxcarbazepine + Rilpivirine Contraindicated
- Artemether / lumefantrine + Oxcarbazepine Major
- Atazanavir + Oxcarbazepine Major
- Benzhydrocodone / acetaminophen + Oxcarbazepine Major
- Bictegravir + Oxcarbazepine Major
Frequently asked questions
Can I take Oxcarbazepine with Tolterodine?
MediHelp rates the interaction as minor. Oxcarbazepine 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. Oxcarbazepine is a weak CYP3A4 inducer and may modestly lower tolterodine exposure, mostly relevant in CYP2D6 poor metabolizers. Reduced antimuscarinic efficacy is possible but usually mild.
How serious is the interaction between Oxcarbazepine 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: Assess bladder symptom control and increase the tolterodine dose only if response is inadequate.
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.
