Drug interactions
Difenoxin + Orphenadrin
Severity: Moderate
Difenoxin 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
Difenoxin is an opioid antidiarrheal and orphenadrine adds CNS depression and anticholinergic effects. Combined use may increase drowsiness and the risk of constipation or ileus.
What this interaction means in plain words
Difenoxin 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.
Difenoxin belongs to Gastrointestinal Tract; Orphenadrin belongs to Musculoskeletal.
Why it happens
Additive CNS depression and antimuscarinic effects on gut motility.
What to do
Monitor for sedation and reduced bowel motility, and avoid use in patients with obstruction. Counsel against driving.
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?
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Other interactions of Orphenadrin
Other interactions of Difenoxin
Frequently asked questions
Can I take Difenoxin with Orphenadrin?
MediHelp rates the interaction as moderate. Difenoxin 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. Difenoxin is an opioid antidiarrheal and orphenadrine adds CNS depression and anticholinergic effects. Combined use may increase drowsiness and the risk of constipation or ileus.
How serious is the interaction between Difenoxin 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 for sedation and reduced bowel motility, and avoid use in patients with obstruction. Counsel against driving.
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.
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