University of Wisconsin–Madison Medical College of Wisconsin

Purple Fentanyl: A New Face on an Old Enemy

Jennifer Esch, PharmD, MBA, BCPS; Matthew Bougie, PharmD; Alexis Vandehey, PharmD, BCPS

WMJ. 2026;125(3):424-426. Published August 11, 2026.

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ABSTRACT

Introduction: Overdoses due to novel potent opioids continue to increase across the United States. The availability of colored fentanyl products that may appeal to younger patients is concerning.

Case Presentation: We present the case of an adult male with an unknown ingestion subsequently identified as purple fentanyl. Brorphine is a common component of purple fentanyl and is considered an emerging novel potent opioid.

Discussion: Only limited number of case reports describing brorphine exposure are available, and many clinicians remain unfamiliar with this substance. It is a potent opioid with a presumed long half-life. Clinical presentation is similar to that of other opioid toxidromes, including respiratory depression, miosis, and sedation, and is managed similarly. Patients may require extended monitoring after exposure to brorphine.

Conclusions: Awareness of emerging substances of abuse will enable clinicians to diagnose and treat affected patients more readily.


Author affiliations: Aurora BayCare Medical Center, Green Bay, Wisconsin (Esch, Bougie, Vandehey).
Corresponding author:
Jennifer Esch, PharmD, MBA, BCPS, 2845 Greenbrier Rd, Green Bay, WI 54311; email Jennifer.esch@aah.org; ORCID ID 0009-0007-4610-236X
Financial disclosures: None declared.
Funding/support:
None declared.
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