Overview Tiotropium / Respimat One-Year Study Status: Completed Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary To evaluate the long term effects of treatment with two doses of Tiotropium delivered by the Respimat inhaler in patients with COPD. Phase: Phase 3 Details Lead Sponsor: Boehringer IngelheimTreatments: Pharmaceutical SolutionsTiotropium Bromide