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Ketamine Infusion Improves Abstinence in Cocaine-Dependent Patients

Ketamine Infusion Improves Abstinence in Cocaine-Dependent Patients
4 months ago · · Comments Off on Ketamine Infusion Improves Abstinence in Cocaine-Dependent Patients

– Kevin Kunzmann
MD Magazine

Ketamine infusion, combined with mindfulness-based behavioral changes, has been shown to improve various aspects of treatment outcomes among rehabilitating cocaine-dependent individuals.

The new findings from a randomized clinical trial show just a single infusion of the highly potent—yet controversial—NMDA receptor agonist is associated with significant patient improvements in cocaine abstinence at the trial’s end.

Investigators—led by Elias Dakwar, MD, assistant professor of Clinical Psychiatry at the Columbia College of Physicians and Surgeons—sought to better evidence the suggestion that concentrated doses of ketamine may help reduce vulnerabilities associated with cocaine use, and improve the likelihood of relapse prevention in rehabilitating patients.

To test this, the team randomly assigned 55 cocaine-dependent individuals to either 40-minute intravenous ketamine .5 mg/kg infusion or midazolam (control). Individuals were given a five-day inpatient stay, which included the start of a five-week course of mindfulness-based relapse prevention.

They sought primary outcomes of end-of-study abstinence and time to relapse—as per first use or study dropout—while assessing for cocaine use through patient self-reporting and urine toxicology.

At study’s end, 48.2% of individuals treated with ketamine maintained their abstinence from cocaine over the final 2 weeks of trial, versus just 10.7% in the control group. Combined with mindfulness-based relapse prevention, ketamine was associated with a 53% reduction in relapse versus midazolam (HR .47; 95% CI: .24 – .92).

Metrics for patient ‘craving’ were 58.1% lower in the ketamine-treated group throughout the trial (95% CI: 18.6 – 78.6), and infusions were well-tolerated; no patients were removed from the study due to adverse events.

Confirming the relapse and craving reduction findings were statistically significant, investigators concluded the single dose of ketamine infusion was association with the promotion of abstinence in cocaine-dependent individuals. The findings could serve as fodder for the rhetoric surrounding ketamine’s potential indications.

Read the complete article here.

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