Drug interactions
Atropine iv / + Orphenadrin
Severity: Moderate
Atropine iv / and Orphenadrin: 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 drugs block muscarinic receptors, so combined use can intensify tachycardia, dry mouth, urinary retention, constipation and confusion. Older patients and those with glaucoma or prostatic enlargement are at greater risk.
What this interaction means in plain words
Atropine iv / and Orphenadrin 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 heart rate, mental status and urinary function, and use the lowest effective doses. Avoid in patients with narrow-angle glaucoma or urinary obstruction.
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 Atropine iv / and Orphenadrin, 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 Orphenadrin
Frequently asked questions
Can I take Atropine iv / with Orphenadrin?
MediHelp rates the interaction as moderate. Atropine iv / and Orphenadrin 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 drugs block muscarinic receptors, so combined use can intensify tachycardia, dry mouth, urinary retention, constipation and confusion. Older patients and those with glaucoma or prostatic enlargement are at greater risk.
How serious is the interaction between Atropine iv / and Orphenadrin?
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 heart rate, mental status and urinary function, and use the lowest effective doses. Avoid in patients with narrow-angle glaucoma or urinary obstruction.
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.
