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HomePharmacologyFentanyl

Fentanyl

Synthetic Opioid Agonist
Drug Class
Synthetic Opioid Agonist
Mechanism of Action (MOA)
Highly potent µ-opioid receptor agonist (~100× morphine).
Black Box Warning
Addiction/abuse; fatal respiratory depression; accidental exposure can be fatal; fatal with benzodiazepines or alcohol.
Clinical Notes
Procedural/surgical analgesia and transdermal chronic pain. Chest-wall rigidity at high doses; leading contributor to overdose deaths. Reverse with naloxone.
Source
FDA label (DailyMed)

Sources

Reviewed June 2026
  1. FDA label (DailyMed) — FDA / DailyMed

Checked against the guideline or standard reference the exam keys to. If it has moved, use Report an error below.

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