Background: Previous studies have suggested that patients with Lewy-body-related dementias might benefit from treatment with the N-methyl D-aspartate receptor antagonist memantine, but further data are needed. Therefore, the efficacy and safety of memantine were investigated in patients with mild to moderate Parkinson’s disease dementia (PDD) or dementia with Lewy bodies (DLB).; Methods: Patients (≥50 years […]