Drug interactions
Pentobarbital + Tolterodine
Severity: Minor
Pentobarbital 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
Pentobarbital induces CYP3A4 and other enzymes, which may lower tolterodine exposure. The effect is generally modest since CYP2D6 is the main route, but could be more important in poor CYP2D6 metabolizers. Additive sedation is also possible.
What this interaction means in plain words
Pentobarbital 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.
Why it happens
Enzyme induction by pentobarbital increases tolterodine metabolism.
What to do
Monitor for reduced bladder symptom control. Adjust tolterodine dose if response is lost.
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 Pentobarbital 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
Frequently asked questions
Can I take Pentobarbital with Tolterodine?
MediHelp rates the interaction as minor. Pentobarbital 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. Pentobarbital induces CYP3A4 and other enzymes, which may lower tolterodine exposure. The effect is generally modest since CYP2D6 is the main route, but could be more important in poor CYP2D6 metabolizers. Additive sedation is also possible.
How serious is the interaction between Pentobarbital 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: Monitor for reduced bladder symptom control. Adjust tolterodine dose if response is lost.
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.
