I'm not sure if this is the right place for this but i'm out of ideas and thought you guys might be able to help. Over the last couple of months it has become readily apparent that my flatmate has a drug-problem, this has manifested itself in extreme lethargy over the last week or so (he never gets out of bed before 12 and is despondent when spoken to). He's always been a pretty habitual user of ketamine but in the last few weeks or so this has ramped up massively to include everything bar heroine. To illustrate, it has come to the point where he's taking entire grams himself and is further mixing it with coke/mdma, it's difficult for me and my other flatmate to do anything as we simply don't have the time. All of us are in final year of law school making time a premium, i've already sat him down and spoken to him frankly about it and whilst he agreed to stop obviously he did not; because of this i'm pretty sure an intervention won't work.
It's very difficult for me to gauge how i respond to this as he is a very close friend and watching him spiral into oblivion is making me passive-depressed, but i'm now at a loss on what action myself/mutual friends can take.