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Research Letter
October 2016

Adverse Effects From Counterfeit Alprazolam Tablets

Author Affiliations
  • 1Department of Emergency Medicine, University of California–San Francisco
  • 2California Poison Control System–San Francisco Division
  • 3Department of Laboratory Medicine, University of California–San Francisco
JAMA Intern Med. 2016;176(10):1554-1555. doi:10.1001/jamainternmed.2016.4306

From October 15 to December 31, 2015, the California Poison Control System–San Francisco division identified 8 patients who experienced adverse effects associated with the ingestion of counterfeit alprazolam tablets found to contain fentanyl and, in some cases, etizolam. The identification of these patients resulted in a coordinated response that included state and local public health departments, a toxicology laboratory, and media outlets, and resulted in an investigation by local law enforcement agencies.

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