Drug interactions
Fesoterodine + Oxcarbazepine
Severity: Minor
Fesoterodine and Oxcarbazepine: 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 exposure to the active metabolite of fesoterodine. This may reduce control of overactive bladder symptoms.
What this interaction means in plain words
Fesoterodine and Oxcarbazepine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Fesoterodine belongs to Genitourinary; Oxcarbazepine belongs to Central Nervous System.
Why it happens
Weak CYP3A4 induction increases clearance of the fesoterodine active metabolite.
What to do
No routine adjustment is needed; monitor symptom response and increase the fesoterodine dose within labeled limits if required.
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 Fesoterodine
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 Fesoterodine with Oxcarbazepine?
MediHelp rates the interaction as minor. Fesoterodine and Oxcarbazepine 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 exposure to the active metabolite of fesoterodine. This may reduce control of overactive bladder symptoms.
How serious is the interaction between Fesoterodine and Oxcarbazepine?
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 is needed; monitor symptom response and increase the fesoterodine dose within labeled limits if required.
What other medicines interact with Fesoterodine?
MediHelp also lists interactions of Fesoterodine with, for example, Bethanechol, Clozapine, Levoketoconazole. The full list is on the Fesoterodine page.
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