A 24-Week, Randomized, Double-blind, Double-dummy, Parallel-group, Active-controlled Study to Assess the Efficacy, Safety, and Tolerability of the Once-daily Rivastigmine Patch Formulation in Patients With Probable Alzheimer's Disease (Mini-Mental State Examination (MMSE) 10-20)

The purpose of this study is to assess the efficacy, safety, and tolerability of Exelon® patch in patients with probable AD (MMSE 10-20), in order to support a planned regulatory submission and registration of Exelon transdermal patch in China. The study is designed to confirm the non-inferiority of the efficacy of Exelon patch (target 10 cm² patch size) versus Exelon capsules (target 6.0 mg bid dose) on cognition, using the Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog).