Silver Book Fact
The U.S. Food and Drug Administration has approved 5 drugs that have proven to temporarily slow the worsening of Alzheimer’s disease symptoms for an average of 6 – 12 months in around 50% of individuals who take them.
Alzheimer's Association. 2011 Alzheimer’s Disease Facts and Figures. Alzheimers Dement. 2011; 7(2): 208-44. http://www.alzheimersanddementia.com/article/S1552-5260(11)00036-7/fulltext