When I read the articles of all the meds he was taking, and to think he had to resort to anethesia to get some sleep, I could only imagine that hell it must have been for him. He was said to be taking 20mg Xanax daily. If you've reached that kind of tolerance, you've got to be in misery. I can't believe how he was able to function.
I think this all started with that Pepsi commercial burn incident where he got started on pain-killers. I speculate that he got hooked on those, and the rest was a drug avalanche that must have made his life miserable.
I do feel real sorry for him. All that fame and fortune, and supposedly access to the best medicine money could buy, and he still ended up in that situation.