This trial will test two interventions: directly observed medication therapy, and long-term therapy with varenicline among 450 smokers with opioid use disorder recruited from community-based, outpatient opioid treatment programs.
3 Primary · 4 Secondary · Reporting Duration: week 52
Active Control
Experimental Treatment
450 Total Participants · 4 Treatment Groups
Primary Treatment: Directly Observed Therapy · No Placebo Group · Phase 4
Age 18+ · All Participants · 1 Total Inclusion Criteria
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