I'm sorry you've had this unfortunate experience.
I've been hospitalized twice for mental-health-related issues (actually as a result of failed suicide attempts.) And I have to say that some of the experiences I had during these hospitalizations are a primary reason why I don't want to do anything that might land me back there.
I hope you are able to find a way to get yourself off of the Effexor. I've been on it in the past. And it's not an antidepressant I'd want to be back on either.