Pimavanserin is the only FDA-approved treatment for the hallucinations and delusions seen in patients with psychosis of Parkinson's disease. Although pimavanserin appears to have a pharmacologic mechanism that is different from other atypical antipsychotics, concern remained that the increased risk of death seen with antipsychotic use in elderly demented patients, and described in all approved antipsychotic labels, would also occur with pimavanserin. Pimavanserin bears the same boxed warning about the risk of death associated with antipsychotic use in elderly patients with dementia.
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