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Cochrane Db Syst Rev · Jan 2006
Review Meta AnalysisBuprenorphine for the management of opioid withdrawal.
- L Gowing, R Ali, and J White.
- University of Adelaide, Department of Clinical and Experimental Pharmacology, DASC Evidence-Bsed Practice Unit, Adelaide, AUSTRALIA, 5005. linda.gowing@adelaide.edu.au
- Cochrane Db Syst Rev. 2006 Jan 1(2):CD002025.
BackgroundManaged withdrawal is a necessary step prior to drug-free treatment. It may also represent the end point of maintenance treatment.ObjectivesTo assess the effectiveness of interventions involving the use of buprenorphine to manage opioid withdrawal, for withdrawal signs and symptoms, completion of withdrawal and adverse effects.Search StrategyWe searched the Cochrane Central Register of Controlled Trials (The Cochrane Library, including the Cochrane Drugs and Alcohol Group trials register, Issue 3, 2005), MEDLINE (January 1966 to August 2005), EMBASE (January 1985 to August 2005), PsycINFO (1967 to August 2005), CINAHL(1982 to July 2005) and reference lists of articles.Selection CriteriaExperimental interventions involved the use of buprenorphine to modify the signs and symptoms of withdrawal in participants who were primarily opioid dependent. Comparison interventions involved reducing doses of methadone, alpha2 adrenergic agonists, symptomatic medications or placebo, or different buprenorphine-based regimes.Data Collection And AnalysisOne reviewer assessed studies for inclusion and methodological quality, and undertook data extraction. Inclusion decisions and the overall process was confirmed by consultation between all three reviewers.Main ResultsEighteen studies (14 randomised controlled trials), involving 1356 participants, were included. Ten studies compared buprenorphine with clonidine; four compared buprenorphine with methadone; one compared buprenorphine with oxazepam; three compared different rates of buprenorphine dose reduction; two compared different starting doses of buprenorphine. (Two studies included more than one comparison.)Relative to clonidine, buprenorphine is more effective in ameliorating the symptoms of withdrawal, patients treated with buprenorphine stay in treatment for longer, particularly in an outpatient setting (SMD 0.82, 95% CI 0.57 to 1.06, P < 0.001), and are more likely to complete withdrawal treatment (RR 1.73, 95% CI 1.21 to 2.47, P = 0.003). At the same time there is no significant difference in the incidence of adverse effects, but drop-out due to adverse effects may be more likely with clonidine. Severity of withdrawal is similar for withdrawal managed with buprenorphine and withdrawal managed with methadone, but withdrawal symptoms may resolve more quickly with buprenorphine. There is a trend towards completion of withdrawal treatment being more likely with buprenorphine relative to methadone (RR 1.30, 95% CI 0.97 to 1.73, P = 0.08). Buprenorphine is more effective than clonidine for the management of opioid withdrawal. There appears to be no significant difference between buprenorphine and methadone in terms of completion of treatment, but withdrawal symptoms may resolve more quickly with buprenorphine.
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