- Diagnosis of probably Alzheimer's disease for at least 1 year.
- Mini Mental State Exam (MMSE) score between 12-26 at screening.
- Participants must be receiving a cholinesterase inhibitor and/or memantine for at
least 4 months, and on a stable dose for at least 2 months.
- Current evidence of a neurological or psychiatric illness that could contribute to
- Living alone.
- Poorly controlled high blood pressure.