Overview A Study of the Safety and Tolerability of Pimavanserin (ACP-103) in Patients With Parkinson's Disease Psychosis Status: Completed Trial end date: 2018-05-30 Target enrollment: Participant gender: Summary To assess the long-term safety and tolerability of ACP-103 in subjects with Parkinson's disease psychosis. Phase: Phase 3 Details Lead Sponsor: ACADIA Pharmaceuticals Inc.Treatments: Pimavanserin