I saw that someone mentioned an Effexor petition on the Effexor side effects page, so I did some Googling and found it. The petition claims that Wyeth is deliberately hiding serious side effect information and asks the company to provide full disclosure of side effects.
So far, there are 11963 signatures with comments. I just read through many of the 11963 comments. A common complaint seems to be something called "brain zaps" during withdrawal. Many people continue to have the brain zaps months after stopping the drug. Others have lost their jobs and their relationships have been put in jeopardy.
I was shocked by what I read there. From the comments I read, it doesn't seem like many doctors are aware that Effexor causes these symptoms. If people are experiencing such devastating withdrawal symptoms with this drug, Wyeth definitely needs to address the issue to both doctors and the public.