Overview PT001 MDI Versus Atrovent Study in Moderate to Severe Chronic Obstructive Pulmonary Disease (COPD) Status: Completed Trial end date: 2011-10-01 Target enrollment: Participant gender: Summary The overall objective of this study is to determine an optimal dose and dosing regimen of PT001 MDI for further evaluation in later stage studies. Phase: Phase 2 Details Lead Sponsor: Pearl Therapeutics, Inc.Treatments: BromidesIpratropium