Objectives: To demonstrate the feasibility and acceptability of a brief mindfulness-based intervention taught by physicians for patients with opioid addiction and to determine if the intervention reduces likelihood of relapse or treatment failure within 6 months. Design: A prospective, feasibility, single-group, cohort pilot study. Setting: A Family Medicine teaching clinic serving a mixed urban and rural population in Bangor, Maine. Subjects: Adult patients initiating outpatient treatment for opioid addiction with buprenorphine (N = 40). Interventions: Study physicians conducted a 10-to 12-min education session for all patients starting treatment during the enrollment period, including a 5-min mindfulness exercise. Enrolled subjects received an MP3 player loaded with six mindfulness audio exercises (5-19 min) and were instructed to practice at least 5 min daily and record their practice in a logbook. Outcome measures: Acceptability and subjective usefulness to recovery were evaluated at 2, 4, and 6 months of follow-up, with qualitative analysis of themes in recorded poststudy interviews. Logbook entries and tabletbased surveys provided data on home mindfulness practice, classified as ''high'' or ''low.'' Relapse or treatment failure was documented. Results: Feasibility and acceptability were demonstrated with 82% enrollment and 100%, 97%, and 90% completion of follow-up visits at 2, 4, and 6 months, respectively, among those still in treatment. Sustained positive impressions of the intervention and exercises remained at 6 months. Relapse or treatment failure was reduced in the ''high'' practice uptake group compared with ''low'' practice uptake (11% vs. 42%, p = 0.033). Conclusions: In contrast to more intensive 8-week models of meditation training, this study demonstrates that even a brief single training session can induce sustained home meditation practice that subjectively helped patients in recovery for opioid addiction and was associated with lower risk of relapse. Brief mindfulness-based interventions may be useful to increase access to mindfulness training in this population.