Probuphine Innovations for Clinical Effectiveness (PRINCE)

HITLAB will conduct a crossover study wherein participants will be asked to wear an actigraphy device continuously for 12 weeks. The first four weeks of the study participants will continue their previously scheduled treatment regimen, prior to receiving the Probuphine implant. Following four weeks of activity and sleep baseline monitoring using the actigraphy device, the participant will receive the Probuphine implant as part of their regularly scheduled treatment plan. Observation of the participant's activity levels will continue for eight weeks following implantation of Probuphine. Actigraphy measurements will include total time asleep, total time awake, sleep efficiency, and time mobile.