opiate dependence
"I started taking heroin in 1998. I was then put on a methadone program in 2004 and at the time I thought that would be all my problems solved but when you are on methadone you tend to still use heroin because you know you've got your methadone 2 fall back on. So I started Subutex 8mg 1 month ago and have never used heroin because there is no withdrawals at all."