This is an interesting topic -
I went on AD's to treat my depression. It didn't work - I still left the 'truth' (snicker). It took me years to get off that crap - well, crap for me. I'll spare you the details, but it was the second best thing that ever happened to me.
Sometimes, people get depressed because they're lives need to be changed. It's a normal reaction to negative stimulus. It's a sign to change. When a typical dub cannot change what's wrong with they're lives, they go on AD's, one of the most over prescribed drugs on the planet. And it does make them into zombies - at least it did to me.
About one year ago I got in contact with just about all of my old dub friends just to see what's what with them. 7 out of 8 of them were on AD's. That's from 0 out of 8. Pathetic!