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Medical equipment used to customize ketamine infusions for patients is seen at the Duke Specialty Infusion Center, Friday, Oct. 27, 2023, in Durham, N.C. Ketamine prescriptions have soared in recent years as an alternative to opioids for pain. But with little research on its effectiveness, some experts worry about the risks of overprescribing another powerful drug that carries risks of safety and abuse. (AP Photo/Matt Kelley)

The Duke Specialty Infusion Center is seen prior to opening for patients, Friday, Oct. 27, 2023, in Durham, N.C. Ketamine prescriptions have soared in recent years as an alternative to opioids for pain. But with little research on its effectiveness, some experts worry about the risks of overprescribing another powerful drug that carries risks of safety and abuse. (AP Photo/Matt Kelley)

Dr. Padma Gulur, a Duke University pain specialist, stands for a portrait on Friday, Oct. 27, 2023, in Durham, N.C. Prescriptions for ketamine have soared in recent years as doctors adopt the mind-altering drug as an alternative pain treatment. Gulur and other specialists see potential for ketamine as a pain therapy, but warn it also carries risks of safety and abuse. (AP Photo/Matt Kelley)

Saline fluid runs through a tube demonstrating how ketamine would be administered to a patient at the Duke Speciality Infusion Center on Friday, Oct. 27, 2023, in Durham, N.C. Ketamine prescriptions have soared in recent years as an alternative to opioids for pain. But with little research on its effectiveness, some experts worry about the risks of overprescribing another powerful drug that carries risks of safety and abuse. (AP Photo/Matt Kelley)

The Duke Specialty Infusion Center is seen prior to opening for patients on Friday, Oct. 27, 2023, in Durham, N.C. Ketamine prescriptions have soared in recent years as an alternative to opioids for pain. But with little research on its effectiveness, some experts worry about the risks of overprescribing another powerful drug that carries risks of safety and abuse. (AP Photo/Matt Kelley)

A lockbox is held to show where ketamine is placed into while administered at the Duke Speciality Infusion Center, Friday, Oct. 27, 2023, in Durham, N.C. Ketamine prescriptions have soared in recent years as an alternative to opioids for pain. But with little research on its effectiveness, some experts worry about the risks of overprescribing another powerful drug that carries risks of safety and abuse. (AP Photo/Matt Kelley)