Overview Efficacy and Safety Comparison of Tiotropium Inhalation Solution (Respimat Inhaler) and Spiriva HandiHaler in COPD Status: Completed Trial end date: 2004-04-01 Target enrollment: Participant gender: Summary Non-inferiority of lung function response to Tiotropium inhalation solution compared to Spiriva HandiHaler Phase: Phase 3 Details Lead Sponsor: Boehringer IngelheimTreatments: Tiotropium Bromide