An Update on Primary Drug Therapies for Alzheimer Disease
Arch Neurol 54:1406-1409, Knopman,D.S.&Morris,J.C., 1997
The Risk-Benefit Profile of Commonly Used Herbal Therapies: Ginkgo, St. John's Wort, Genseng, Echinacea, Saw Palmetto, and Kava
Ann Int Med 136:42-53, Ernst,E., 2002