Overview The HERO-study: Effects of Roflumilast in Patients With COPD (Chronic Obstructive Pulmonary Disease) (BY217/M2-121) Status: Completed Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary The purpose of this trial is to study the effects of roflumilast on lung function parameters indicative of hyperinflation in patients with COPD. Phase: Phase 3 Details Lead Sponsor: AstraZeneca