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Mixed amphetamine salts-extended release (MAS-ER) as a behavioral treatment augmentation strategy for cocaine use disorder: A randomized clinical trial.
Experimental and Clinical Psychopharmacology 2023 September 22
Psychosocial interventions remain the primary strategy for addressing cocaine use disorder (CUD), although many individuals do not benefit from these approaches. Amphetamine-based interventions have shown significant promise and may improve outcomes among individuals continuing to use cocaine in the context of behavioral interventions. One hundred forty-five adults (122 males) who used cocaine a minimum of 4 days in the prior month and met the criteria for a CUD enrolled in a two-stage intervention. All participants received a computer-delivered skills intervention and contingency management for reinforcing abstinence for a 1-month period. Participants demonstrating less than 3 weeks of abstinence in the first month were randomized to receive mixed amphetamine salts-extended release (MAS-ER) or placebo (80 mg/day) for 10 weeks under double-blind conditions. All participants continued with the behavioral intervention. The primary outcome was the proportion of individuals who achieved 3 consecutive weeks of abstinence as measured by urine toxicology confirmed self-report at the study end. The proportion of participants demonstrating 3 consecutive weeks of abstinence at study end did not differ between the medication groups: MAS-ER = 15.6% (7/45) and placebo = 12.2% (5/41). Participants who received MAS-ER reported greater reductions in the magnitude of wanting cocaine, although no group differences were noted in either the perceived improvement or the frequency of wanting cocaine. Retention rates were greater for both medication groups compared to behavioral responders. Overall, augmenting a behavioral intervention with MAS-ER did not significantly increase the abstinence rate among individuals continuing to use cocaine following a month of behavioral therapy alone. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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