Overview A Study of the Safety and Efficacy of Injectable Risperidone in the Prevention of Bipolar Mood Episodes Status: Completed Trial end date: 2007-12-01 Target enrollment: Participant gender: Summary The purpose of this study is to determine if risperidone is effective and safe in the prevention of mood episodes in patients with bipolar 1 disorder. Phase: Phase 3 Details Lead Sponsor: Johnson & Johnson Pharmaceutical Research & Development, L.L.C.Treatments: Risperidone