By Alana M. Vivolo-Kantor; Christine L. Mattson, Maria Zlotorzynska,

Ketamine, a Schedule III controlled substance* that is Food and Drug Administration (FDA)–approved for general anesthesia, can produce mild hallucinogenic effects and cause respiratory, cardiovascular, and neuropsychiatric adverse events (1). In 2019, a form of ketamine (esketamine) was approved by FDA for use in treatment-resistant depression among adults† (2). Ketamine use, poison center calls for ketamine exposure, and ketamine drug reports from law enforcement have increased through 2019 (3), but recent trends in ketamine involvement in fatal overdoses are unknown. Data from CDC’s State Unintentional Drug Overdose Reporting System (SUDORS) were analyzed to describe characteristics of and trends in overdose deaths with ketamine detected or involved during July 2019–June 2023.

MMWR Morb Mortal Wkly Rep 2024;73:1010–1012