Okay. What are your sources?
I took this from a science forum I am in. You can look at the tests.
MMS: Error
Stefan Leucht, Caroline Corves, Dieter Arbter, Rolf R Engel, Chunbo Li, John M Davis,
Second-generation versus first-generation antipsychotic drugs for schizophrenia: a meta-analysis, The Lancet, Volume 373, Issue 9657, 3 January 2009-9 January 2009, Pages 31-41, ISSN 0140-6736, DOI: 10.1016/S0140-6736(08)61764-X.
So what about those first-generation drugs? Well, in 1977, it was found that schizophrenic "relapse is greater in severity during drug administration than when no drugs are given", and that symptoms got worse with relapse, with other new symptoms coming in. (G Gardos and J. Cole, "Maintenance antipsychotic therapy: is the cure worse than the disease?" American Journal of Psychiatry 133 (1977) 32-36, and G Gardos and J. Cole, "Withdrawal syndromes associated with antipsychotic drugs," AJM 135 (1978) 1321-24)
In 1977, the National Institute of Mental Health funded studies to see if schizophrenia could be treated without medications. In the first, those not medicated were discharged sooner, and only 35% relapsed within a year, compared with 45% of the medicated group. Nonmedicated patients stated they found it "gratifying and informative" to go through the psychotic episodes unmedicated, and the researchers concluded that medication stopped the patients from learning to cope with their illness, and prevented them from doing better over the long run. (W. Carpenter, "The treatment of acute schizophrenia without drugs,"
American Journal of Psychiatry 134 (1977): 14-20)
So first-generation antipsychotics didn't do so well, and newer ones don't do much better.
This is not to say they don't work at all; in the short term, they do quite well in studies. (Say, over a month or so.) But in long-term treatment, there's all sorts of wonderful side effects and more medication ends up being required, not less.
Hmm.