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Medical use of ketamine is surging. So are illicit forms of the drug.

U.S. seizures of illegal ketamine have dramatically risen, new research shows, as the drug has become a popular mental health treatment

May 24, 2023 at 11:00 a.m. EDT
Ketamine seizures by federal, state and local law enforcement are on the rise in the United States. (Getty Images/iStockphoto)
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U.S. authorities have seized increasing quantities of illegal ketamine, according to new research, a trend that coincides with the psychedelic drug’s rising popularity as a treatment for mental health ailments.

The number of ketamine seizures by federal, state and local law enforcement in the United States increased from 55 in 2017 to 247 in 2022, while the total weight increased by more than 1,000 percent over that time, according to a letter published Wednesday in JAMA Psychiatry. Most of the ketamine was in powder form, which could raise the risk of being adulterated with deadly drugs such as fentanyl.