My wife has been taking Nuplazid 34mg, Pimavanserine, for about 6 months. It seems to help somewhat for her PD psychosis but it's not dramatic. She still hallucinates and becomes difficult but it probably helps enough to keep her home. She is also on other psych meds, when she takes them. She had 16 ECT treatments last year, which even if they helped, were not worth the risk and time. The last option is clozapine which requires weekly blood tests.