Overview Safety & Efficacy of TC-5619 in Adults With Inattentive-predominant Attention Deficit/Hyperactivity Disorder (ADHD) Status: Completed Trial end date: 2012-07-01 Target enrollment: Participant gender: Summary Study is to assess if TC-5619 improves symptoms for adults diagnosed with the inattentive-predominant subtype of ADHD over a 4-week treatment period. Phase: Phase 2 Details Lead Sponsor: Targacept Inc.