Drug interactions
Atropine + Fentanyl transdermal
Severity: Moderate
Atropine and Fentanyl transdermal: 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 slow gastrointestinal and urinary tract function. Used together they can increase the risk of severe constipation, urinary retention and, in the worst case, paralytic ileus.
What this interaction means in plain words
Atropine and Fentanyl transdermal 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 reduction in gut and bladder motility from opioid effects and muscarinic blockade.
What to do
Monitor bowel function and urinary output, and start a laxative regimen. Reassess the need for the anticholinergic if retention or ileus symptoms develop.
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 Atropine
- Atropine + Eluxadoline Major
- Atropine + Henbane Major
- Atropine + Pramlintide Major
- Abobotulinumtoxina + Atropine Moderate
- Aclidinium + Atropine Moderate
- Amantadine + Atropine Moderate
Frequently asked questions
Can I take Atropine with Fentanyl transdermal?
MediHelp rates the interaction as moderate. Atropine and Fentanyl transdermal 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 slow gastrointestinal and urinary tract function. Used together they can increase the risk of severe constipation, urinary retention and, in the worst case, paralytic ileus.
How serious is the interaction between Atropine and Fentanyl transdermal?
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 bowel function and urinary output, and start a laxative regimen. Reassess the need for the anticholinergic if retention or ileus symptoms develop.
What other medicines interact with Atropine?
MediHelp also lists interactions of Atropine with, for example, Eluxadoline, Henbane, Pramlintide. The full list is on the Atropine page.
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