Stands, I also thought your older son had a Xanax habit and not an opiate addiction. Suboxone only works for opiate addiction and the use of it basically holds off the worst of the withdrawal symptoms so that the addict can work a program to get clean.
Also, suboxone has a substantial street value. Is is possible, if he's not addicted to opiates that he is seling his subuxone to support his Xanax habit?