http://www.nia.nih.gov/alzheimers/publication/alzheimers-disease-medications-fact-sheet
This document also available in Spanish
Alzheimer's Disease Education and Referral Center, National Institute on Aging
Medications called cholinesterase inhibitors are prescribed for mild to moderate Alzheimer’s disease. These drugs may help delay or prevent symptoms from becoming worse for a limited time and may help control some behavioral symptoms.