Since it is FDA approved for other purposes I was allowed to try it (with mixed results) but it is part of a new
class of antipsychotics in development, the 5-HT3 receptor antagonists that are being researched as adjuncts (in addition to standard antipsychotics) treatments for schizophrenia.
"A 2006 double-blind, randomized controlled trial indicated that ondansetron may have value in the treatment of schizophrenia, as an adjunct to haloperidol.