Anatomy of an Epidemic by Robert Whitaker. Also check out this blog post of his that summarizes the largest longterm studies of the mainstay psych drugs:
http://www.madinamerica.com/madinamerica.com/Home/AB86250A-A...
You definitely have to read the book though, it's incredibly well researched.
I have a hard time believing that psychiatrists and psychologists would endorse psychotropic drugs because of some big pharma conspiracy.
If you're right, I'd like to know. But if claims like, "every longterm study on every pharma drug shows that you are worse off in the long run," are so sweeping as to seem spurious.