Has he looked into, researched Ayahuasca yet? Legal in many places now including Canada, and plenty of anecdotal evidence that it helps break addictions/dependancies.
I'm into drugs as much as the next guy. Ayahuasca, peyote, and similar things are just hallucigenics. It's all BS from people who don't know what it feels like and link it to spiritualism. Religion might be dead in the 21st century, but spiritualism is definitely taking its place.