"Ensuring that offenders have access to interventions that address their substance abuse issues allows the Correctional Service of Canada (CSC) to support the safe reintegration of offenders into society. The treatment needs of offenders with opioid dependence are met through CSC’s Methadone Maintenance Treatment (MMT) Program.1
Some of the objectives of CSC’s MMT program include reducing relapse to opioid drug use and the incidence of drug-related criminal activity; improving the offender’s general health and quality of life; and assisting and motivating offenders to gradually desist from all illicit drug use."

Source

Johnson, S., Farrell MacDonald, S., & Cheverie, M. (2011). Research at a Glance: Characteristics of participants in the Methadone Maintenance Treatment (MMT) Program. Research Report R253. Ottawa, Ontario: Correctional Service Canada. Last accessed on the web Dec. 12, 2012.
http://www.csc-scc.gc.ca/text…