Overview Bupropion SR for Treating Smokeless Tobacco Use Status: Completed Trial end date: 2005-05-01 Target enrollment: Participant gender: Summary To determine the efficacy and safety of bupropion SR for quitting tobacco in smokeless tobacco users. Phase: Phase 3 Details Lead Sponsor: Mayo ClinicCollaborator: West Virginia UniversityTreatments: BupropionLobeline