157
Participants
Start Date
December 31, 2006
Primary Completion Date
May 31, 2007
Study Completion Date
August 31, 2007
Extract of Ginkgo Biloba (EGb-761 capsules)
EGb-761 240mg/d, 1 capsule(80mg) tid,po,12 weeks; Each capsule contains 19.6mg flavonol glycosides and 4.8mg terpene lactones.
Placebo
Wheat flour placebo capsule,1 capsule tid, po,12 weeks
Beijing Hui-Long-Guan Hospital, Beijing
Peking University
OTHER
Beijing HuiLongGuan Hospital
OTHER