Drug overdose is the leading cause of injury deaths in young adults in the United States, with fentanyl causing over 70,000 deaths annually. Many people who use fentanyl become trapped in their addiction out of fear and a low tolerance for the withdrawal symptoms, which include muscle cramps, nausea, chills, sweats and intense cravings. They can't stop using fentanyl, and they also have trouble starting either of the two medications, methadone and buprenorphine, that can dramatically reduce their risk of overdose death.

Research findings published Aug. 29 in Addiction Science & Clinical Practice may offer hope. A pilot study showed that a small amount of ketamine can reduce or eliminate the withdrawal symptoms associated with quitting fentanyl.

The main takeaway is that we have found an easier way for people trapped in the grip of fentanyl addiction to get started in treatment." Dr. Lucinda Grande, clinical assistant professor of family medicine, University of Washington School of Medicine She was the study's lead author.

"Methadone can be difficult to access due to strict federal regulations, and starting buprenorphine can cause severe withdrawal symptoms before those who start it become stabilized," added study co-author Dr. Tom Hutch. He is the medical director of the opioid treatment program at We Care Daily Clinics in Auburn, Wash.

"Ketamine, at an imperceptibly low dose, helps bridge that gap." Over 14 months, Grande and colleagues in Auburn and Olympia prescribed ketam.