Because Naltrexone induces withdrawals if you are not completely clean and opiate free, we initiate that therapy under sedation, so that the bulk of the acute withdrawals happens while
you are asleep.
However, if
you happen to be clean of all opiate - including, of course, Suboxone, you can just get a shot of Vivitrol. Vivitrol is - injectable Naltrexone that is slowly release into your system over a month period.