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Naltrexone Implants as Relapse Prevention

Naltrexone Implants as an Aid in Preventing Relapse Following Inpatient Treatment for Opioid Addiction.

Status
Terminated
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00269607
Enrollment
12
Registered
2005-12-23
Start date
2005-05-31
Completion date
2006-12-31
Last updated
2013-12-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Opioid Dependency

Keywords

Substance abuse, Treatment, Relapse prevention, opioid antagonist

Brief summary

The purpose of this clinical trial is to study the efficacy and safety of naltrexone implants as relapse prevention for patients that are completing treatment for opiate addiction in inpatient (or similarly controlled) settings. Participants in the naltrexone experimental group are prematched in a pairwise fashion with other patients who do not want a naltrexone implant during the first six months after ending inpatient treatment, but who reiceive treatment as usual (TAU) from the Norwegian healthcare system. The hypotheses are that quality of life, depression, opioid use, will be significantly better in the naltrexone group compared to the non at 6-, 12-, and 18-month follow-up. We also hypothesize that the implants can prevent death from opioid overdose up to 6 months after commenced treatment.

Interventions

DRUGImplantation of naltrexone implants

Sponsors

University of Oslo
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
19 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* soon to complete inpatient treatment for opioid addiction * living in southern Norway

Exclusion criteria

* psychosis / major depression, currently not treated * pregnancy * liver enzymes: ASAT or ALAT \> threefold above upper boundary * maintenance treatment with methadone or buprenorphine

Design outcomes

Primary

MeasureTime frame
Primary Outcomes: drug use at 6(12/18)months by self report, hair analysis; days in work or education, number of drug-free friends at 6 (12/18)months by self report

Secondary

MeasureTime frame
Secondary Outcomes: depression at 6(12/18)months by BDI and Hopkins SCL-25; quality of life at 6(12/18)months by EuropASI

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026