Overview Dose Finding Study of CHF 4226 for Treating Patients With COPD Status: Completed Trial end date: 2007-06-01 Target enrollment: Participant gender: Summary The purpose of this study is to identify the optimal once-daily dose of CHF 4226 to be further developed for the treatment of patients with COPD. Phase: Phase 2 Details Lead Sponsor: Chiesi Farmaceutici S.p.A.Collaborator: Chiesi Pharmaceuticals Inc.Treatments: Salmeterol Xinafoate