47
Participants
Start Date
January 31, 2005
Primary Completion Date
January 31, 2011
Study Completion Date
June 30, 2011
Gingko Biloba
Ginkgo Biloba 120 mg twice daily for 14 days
Echinacea purpurea
Echinacea purpurea 500 mg three times daily for 14 days
Panax ginseng
Panax ginseng 500 mg twice daily
National Institutes of Health Clinical Center, 9000 Rockville Pike, Bethesda
National Institutes of Health Clinical Center (CC)
NIH