Drug interactions
Orphenadrin + Tiotropium
Severity: Moderate
Orphenadrin and Tiotropium: 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
Both are anticholinergics. Although tiotropium is inhaled with low systemic exposure, combined use can add to systemic and local anticholinergic effects such as dry mouth, urinary retention and constipation.
What this interaction means in plain words
Orphenadrin and Tiotropium 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.
Orphenadrin belongs to Musculoskeletal; Tiotropium belongs to Respiratory.
Why it happens
Additive muscarinic receptor antagonism.
What to do
Monitor for urinary retention, constipation, dry mouth and narrow-angle glaucoma symptoms. Reassess the need for orphenadrine if these appear.
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 Orphenadrin and Tiotropium, 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 Orphenadrin
Other interactions of Tiotropium
Frequently asked questions
Can I take Orphenadrin with Tiotropium?
MediHelp rates the interaction as moderate. Orphenadrin and Tiotropium 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. Both are anticholinergics. Although tiotropium is inhaled with low systemic exposure, combined use can add to systemic and local anticholinergic effects such as dry mouth, urinary retention and constipation.
How serious is the interaction between Orphenadrin and Tiotropium?
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 urinary retention, constipation, dry mouth and narrow-angle glaucoma symptoms. Reassess the need for orphenadrine if these appear.
What other medicines interact with Orphenadrin?
MediHelp also lists interactions of Orphenadrin with, for example, Alfentanil, Amobarbital, Benzhydrocodone / acetaminophen. The full list is on the Orphenadrin 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.
