A randomized, placebo-controlled trial of sustained-release dextroamphetamine for treatment of methamphetamine addiction.
Author(s): Galloway GP, Buscemi R, Coyle JR, Flower K, Siegrist JD, Fiske LA, Baggott MJ, Li L, Polcin D, Chen CY, Mendelson J
Affiliation(s): Addiction and Pharmacology Research Laboratory, California Pacific Medical Center, San Francisco, California, USA. gantt@cpmcri.org
Publication date & source: 2011-02, Clin Pharmacol Ther., 89(2):276-82. Epub 2010 Dec 22.
Publication type: Randomized Controlled Trial; Research Support, N.I.H., Extramural
Sixty treatment-seeking individuals with methamphetamine (MA) dependence entered a randomized, placebo-controlled, double-blind clinical trial of oral dextroamphetamine (d-AMP) as a replacement therapy for MA dependence. The subjects took 60 mg sustained-release d-AMP for 8 weeks, during which time they received eight 50-min sessions of individual psychotherapy. Adverse events and urine toxicology for MA were assessed two times a week. There were no serious adverse events. Urine samples containing <1,000 ng/ml of MA were classified as negative for MA. The MA-negative scores in the d-AMP group (3.1 +/- SD 4.6) were no higher than those in the placebo group (3.3 +/- SD 5.3; P > 0.05). However, withdrawal and craving scores were significantly lower in the d-AMP group (P < 0.05 for both). Although subjects taking d-AMP did not reduce their use of MA, the significant reductions observed in withdrawal and craving scores in this group support the need for further exploration of d-AMP as a pharmacologic intervention for MA dependence, possibly at higher doses.
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