My mother was just diagnosed with Alzheimer's. Thought it was just vascular dementia, but the PET scan reveled Alzheimer's. The neurology Dr has prescribed her Namenda as a first course of action and will be giving other medicines after she has taken this for 7 weeks. The Dr has started off with small doses building up to bigger doses. Has anyone had any luck with this med. It is only given to moderate to sever patients with Alzheimer's.