It's hard to explain briefly, and I don't know the details. However, I know that my own antidepressant has no significant difference versus a placebo effect with respect to depression. I'm not claiming that they don't work for people, just that they were rushed to market given current studies.
Reboxetine is one example. It's an antidepressant pushed by Pfizer. Initial studies showed it was effective versus placebo or SSRIs, but later research found serious publication bias -- Pfizer suppressed evidence suggesting it was not effective. Only after the German Institute for Quality and Efficiency in Health Care obtained unpublished data from Prizer was its lack of efficacy obvious:
I was hoping for some sort of accessible synthesis of the available literature, since I don't have the time or inclination to get eyeballs deep in this issue. But thank you for the links.
Would this explain the propagation of, umm, data-challenged psychiatric drugs in the 80s and 90s?