Drug interactions
Fentanyl transdermal + Pregabalin
Severity: Major
Fentanyl transdermal and Pregabalin: major 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
Pregabalin with transdermal fentanyl may cause excessive sedation, impaired psychomotor performance and respiratory depression. Fentanyl continues to be absorbed from the skin depot for many hours after patch removal, which prolongs the risk.
What this interaction means in plain words
Fentanyl transdermal and Pregabalin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive central nervous system and respiratory depressant effects through different pharmacodynamic pathways.
What to do
Reserve the combination for patients with no adequate alternatives, starting pregabalin at a low dose and titrating slowly. Monitor for sedation and respiratory depression, including after patch removal or dose changes.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Pregabalin
Frequently asked questions
Can I take Fentanyl transdermal with Pregabalin?
MediHelp rates the interaction as major. Fentanyl transdermal and Pregabalin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Pregabalin with transdermal fentanyl may cause excessive sedation, impaired psychomotor performance and respiratory depression. Fentanyl continues to be absorbed from the skin depot for many hours after patch removal, which prolongs the risk.
How serious is the interaction between Fentanyl transdermal and Pregabalin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reserve the combination for patients with no adequate alternatives, starting pregabalin at a low dose and titrating slowly. Monitor for sedation and respiratory depression, including after patch removal or dose changes.
What other medicines interact with Pregabalin?
MediHelp also lists interactions of Pregabalin with, for example, Alprazolam, Amobarbital, Belladonna and opium. The full list is on the Pregabalin page.
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