This report shows that on a snapshot day in 2011, there were 46,446 clients who received pharmacotherapy for opioid dependence and 1,444 prescribers. Clients are getting older, with the proportion of those aged 30 and over increasing from 7 in 10 (72%) in 2006 to more than 8 in 10 (85%) in 2011. As in previous years, methadone was the most common pharmacotherapy drug, with almost 7 in 10 clients (69%) treated with this drug. The rest were treated with either buprenorphine or buprenorphine-naloxone.