NIDA-CTO-0011
The primary objective of this study is to conduct a preliminary assessment of the possible efficacy of ondansetron to reduce methamphetamine use in outpatients with methamphetamine dependence. The hypothesis is that ondansetron treatment compared to placebo will decrease the weekly proportion of methamphetamine positive urines. The results of this study will be used to design subsequent larger studies to confirm the efficacy of ondansetron. This study is also intended to gather preliminary information on biological or psychosocial characteristics of patients who may show better ondansetron treatment responsiveness.
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