Journal
EUROPEAN ADDICTION RESEARCH
Volume 25, Issue 6, Pages 303-309Publisher
KARGER
DOI: 10.1159/000501931
Keywords
Naltrexone; Extended-release naltrexone; Opioid dependency; Maintenance treatment program; Treatment of opioid dependence; Opioid maintenance treatment
Categories
Funding
- Research Council of Norway [204725-3]
- Western Norway Regional Health Authority
- Norwegian Centre for Addiction Research, University of Oslo
- Akershus University Hospital
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Background and objective: Opioid maintenance treatment (OMT) is highly available in Norway, but only 50% of opioid-dependent individuals are enrolled in such programs. This study was aimed at examining if availability of extended-release naltrexone (XR-NTX) could attract individuals who for different reasons were not enrolled in an OMT program. Methods: In a Norwegian clinical study, n = 117 opioid-dependent adults volunteered to receive XR-NTX in a 9-month period, as an extension of a previous randomized clinical trial. Results: Before study inclusion, 40.2% (n = 47) of the study participants were not enrolled in OMT while the remainder were recruited from OMT. Participants not enrolled in OMT displayed more ongoing severe addiction-related problems such as heroin use (p = 0.002), but displayed a higher retention in treatment in the 9-month extension study (p = 0.048 for log-rank test) than participants enrolled in OMT. Conclusion: Availability of XR-NTX attracted opioid-dependent individuals not previously enrolled in OMT. While OMT may be perceived as a burden with regard to daily intake and control measures, one-monthly injections with XR-NTX may be perceived favourable, offering more freedom to the patients, not having addictive properties, and potentially reducing heroin craving. We suggest that an introduction of XR-NTX in Europe may increase the number of opioid-dependent individuals in treatment.
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