I know pretty well, from personal, or close-friend experience, the bad effects of addiction. However, I had a friend who was war-veteran with chronic pain(that's about all I knew at the time) and he got used to taking daily a lot of stuff at once- he mixed alcohol, painkillers (what was that name, percocet?), and drugs (still not sure on the exact ones he took). I didn't see how bad it was at first, but with time it was obvious. So I tried to explain to him that what he does is bad for him, and I kind of lost my words. My argument ended up quite badly. Not that a good argument would have necessarily changed everything, but I would like to be prepared better if anything like this ever happens again to anyone I know. Suggestions?