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A comparison of four buprenorphine dosing regimens using open-dosing procedures: is twice-weekly dosing possible?

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Aims. To compare opioid withdrawal symptoms during 24-, 48-, 72- and 96-hour buprenorphine dosing regimens and to evaluate subjects' preferences for these different dosing schedules. Subjects. Fourteen opioid-dependent subjects participated in this study. They received daily sublingual maintenance doses of 4 mg/70 kg (n = 4) or 8 mg/70 kg (n = 10) of buprenorphine. Intervention. In the first study subjects received, in a random order, four dosing regimens for five repetitions of each: daily maintenance doses every 24 hours (4 or 8 mg/70 kg), double the daily maintenance dose every 48 hours (8 or 16 mg/70 kg), triple the daily maintenance dose every 72 hours (12 or 24 mg/70 kg), and quadruple the daily maintenance dose every 96 hours (16 or 32 mg/70 kg). Measures of subjective and observer opioid withdrawal symptoms were assessed prior to receipt of each dose. In a second study, subjects chose between the different dosing regimens. Findings. Some withdrawal ratings increased during the less frequent dosing schedules in the first study. In the second study, 46% of subjects preferred the quadruple-every-fourth-day dosing regimen over every other option, and only 14% preferred to be dosed daily. Conclusions. These results suggest that some opioid-dependent outpatients are willing and able to endure the withdrawal symptoms associated with less than daily dosing, and a twice-weekly dosing regimen may be possible.
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Document Type: Research Article

Affiliations: 1: Departments of Psychiatry, Psychology, Substance Abuse Treatment Center, University of Vermont, Bington, VT, USA 2: Departments of Psychiatry, Psychology and Medical Biostatistics, Substance Abuse Treatment Center, University of Vermont, Bington, VT, USA

Publication date: 2000-07-01

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