Bupropion for the Treatment of Methamphetamine Dependence

• Published in: Neuropsychopharmacology (New York, N.Y.) Vol. 33; no. 5; pp. 1162 - 1170
• Main Authors: ELKASHEF, Ahmed M, RAWSON, Richard A, PEARCE, Valerie J, MCCANN, Michael, CAMPBELL, Jan, GORODETZKY, Charles, HANING, William, CARLTON, Barry, MAWHINNEY, Joseph, WEIS, Dennis, ANDERSEN, Ann L, LI, Shou-Hua, HOLMES, Tyson, SMITH, Edwina V, CHIANG, Nora, KAHN, Roberta, VOCCI, Frank, LING, Walter
• Format: Journal Article
• Language: English
• Published: New York, NY Nature Publishing 01.04.2008; Nature Publishing Group
• Subjects: Addictive behaviors; Adult; Adult and adolescent clinical studies; Amphetamine-Related Disorders - drug therapy; Amphetamine-Related Disorders - psychology; Amphetamine-Related Disorders - urine; Biological and medical sciences; Bupropion - therapeutic use; Dopamine Uptake Inhibitors - therapeutic use; Double-Blind Method; Drug addiction; Female; Follow-Up Studies; Humans; Male; Medical sciences; Methamphetamine - adverse effects; Methamphetamine - urine; Middle Aged; Mississippi - epidemiology; Neuropharmacology; Pharmacology. Drug treatments; Psychoanaleptics: cns stimulant, antidepressant agent, nootropic agent, mood stabilizer; Psychoanaleptics: cns stimulant, antidepressant agent, nootropic agent, mood stabilizer..., (alzheimer disease); Psychology. Psychoanalysis. Psychiatry; Psychopathology. Psychiatry; Psychopharmacology; Psychotherapy - methods; Severity of Illness Index; Treatment Outcome; Mississippi; Amphetamine derivatives; Drug addiction; risk factors; CNS stimulant; Psychotropic; Metamfetamine; Substance abuse; Sympathomimetic; Bupropion; Treatment; drug abuse; Addiction; methamphetamine; severity of illness index; Dependence; Risk factor; Antidepressant agent; Drug of abuse; Severity score
• ISSN: 0893-133X; 1740-634X
• DOI: 10.1038/sj.npp.1301481

Bupropion was tested for efficacy in increasing weeks of abstinence in methamphetamine-dependent patients, compared to placebo. This was a double-blind placebo-controlled study, with 12 weeks of treatment and a 30-day follow-up. Five outpatient substance abuse treatment clinics located west of the Mississippi participated in the study. One hundred and fifty-one treatment-seekers with DSM-IV diagnosis of methamphetamine dependence were consented and enrolled. Seventy-two participants were randomized to placebo and 79 to sustained-release bupropion 150 mg twice daily. Patients were asked to come to the clinic three times per week for assessments, urine drug screens, and 90-min group psychotherapy. The primary outcome was the change in proportion of participants having a methamphetamine-free week. Secondary outcomes included: urine for quantitative methamphetamine, self-report of methamphetamine use, subgroup analyses of balancing factors and comorbid conditions, addiction severity, craving, risk behaviors for HIV, and use of other substances. The generalized estimating equation regression analysis showed that, overall, the difference between bupropion and placebo groups in the probability of a non-use week over the 12-week treatment period was not statistically significant (p=0.09). Mixed model regression was used to allow adjustment for baseline factors in addition to those measured (site, gender, level of baseline use, and level of symptoms of depression). This subgroup analysis showed that bupropion had a significant effect compared to placebo, among male patients who had a lower level of methamphetamine use at baseline (p<0.0001). Comorbid depression and attention-deficit/hyperactivity disorder did not change the outcome. These data suggest that bupropion, in combination with behavioral group therapy, was effective for increasing the number of weeks of abstinence in participants with low-to-moderate methamphetamine dependence, mainly male patients, regardless of their comorbid condition.