Overview Tiotropium / Respimat One Year Study in COPD. Status: Completed Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary The objective of the study is to evaluate the long-term (one year) efficacy and safety of tiotropium delivered by the Respimat inhaler in patients with COPD. Specifically, the study will examine the effect of treatment on COPD exacerbations. Phase: Phase 3 Details Lead Sponsor: Boehringer IngelheimTreatments: Tiotropium Bromide