Individuals new to methadone maintenance will be asked to participate in this 6-month, double-blind, randomized control trial. All participants will complete a baseline interview, a medical screening and follow-up interviews at 1, 3 and 6-months post-baseline. These interviews take approximately 60 minutes, and survey various areas of the participants' experiences, including basic demographic information, mood, sleep and substance use areas. All participants will also be asked to complete a 2-night sleep monitoring at the time of the baseline interview and again at the 1-month follow-up interview. Participants will also receive study medication; half of the participants will receive a placebo medication, and the other half will receive Trazodone, a widely-prescribed, well-tolerated, low side-effect medication. Neither the participant nor the study staff will know which medication the participant is taking while the participant is actively enrolled in the study. This information can be available to the participant at the end of his/her study participation.