Drug interactions
Oxybutynin transdermal + Trimipramine
Severity: Moderate
Oxybutynin transdermal and Trimipramine: moderate 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
Transdermal oxybutynin delivers a systemic antimuscarinic, which adds to the anticholinergic effects of trimipramine. Dry mouth, constipation, urinary retention, blurred vision and confusion may be intensified, though transdermal delivery produces less of the active metabolite than oral oxybutynin.
What this interaction means in plain words
Oxybutynin transdermal and Trimipramine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive antimuscarinic effects.
What to do
Monitor for anticholinergic adverse effects and cognitive changes, particularly in older adults. Lower the dose or switch if symptoms are troublesome.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Oxybutynin transdermal and Trimipramine, 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 Trimipramine
- Disopyramide + Trimipramine Contraindicated
- Dofetilide + Trimipramine Contraindicated
- Ibutilide + Trimipramine Contraindicated
- Isocarboxazid + Trimipramine Contraindicated
- Pentamidine + Trimipramine Contraindicated
- Phenelzine + Trimipramine Contraindicated
Frequently asked questions
Can I take Oxybutynin transdermal with Trimipramine?
MediHelp rates the interaction as moderate. Oxybutynin transdermal and Trimipramine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Transdermal oxybutynin delivers a systemic antimuscarinic, which adds to the anticholinergic effects of trimipramine. Dry mouth, constipation, urinary retention, blurred vision and confusion may be intensified, though transdermal delivery produces less of the active metabolite than oral oxybutynin.
How serious is the interaction between Oxybutynin transdermal and Trimipramine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for anticholinergic adverse effects and cognitive changes, particularly in older adults. Lower the dose or switch if symptoms are troublesome.
What other medicines interact with Trimipramine?
MediHelp also lists interactions of Trimipramine with, for example, Disopyramide, Dofetilide, Ibutilide. The full list is on the Trimipramine 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.
