Two Words: Effexor Methadone.
I expect Wyeth to put it out anytime now; the Effexor antidote. First the drug that works great but is agony to discontinue, keeping people on it longer so they have to buy more. Then, when that scam is getting too much attention, BAM! Introduce "Effexoff," the drug that helps you get off Effexor without LOSING YOUR MIND.
Just a theory.