19
Participants
Start Date
August 31, 2014
Primary Completion Date
September 30, 2015
Study Completion Date
September 30, 2015
Tolcapone
Tolcapone is in the medication class of catechol-O-methyltransferase (COMT) inhibitors
Placebo
A placebo is a tablet or capsule that looks like the study medication (in this case, tolcapone) but does not contain any active ingredients
National Center for Responsible Gaming
OTHER
University of California, San Francisco
OTHER