Is the methadone program effective in helping patients in addiction clinics in Ontario? Methadone is prescribed for two main reasons: for pain relief, and for the treatment of opioid dependence. The methadone maintenance program in Ontario is administered by the College of Physicians and Surgeons of Ontario on behalf of the Ministry of Health and Long-Term Care. The purpose of the program is to improve the quality and accessibility of methadone maintenance treatment in Ontario, because methadone itself has already been recognized as an effective tool in the fight against opiate addiction. In conjunction with the Centre for Addiction and ...