28
Participants
Start Date
January 30, 2008
Primary Completion Date
June 16, 2016
Study Completion Date
June 16, 2016
Tolcapone
200 mg by mouth three times a day
Placebo
200 mg by mouth three times a day
Columbia University Irving Medical Center, New York
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Columbia University
OTHER