Overview A Study to Evaluate Efficacy and Safety of Methacholine Chloride Challenge Test in Diagnosis of Adult Asthma Status: Completed Trial end date: 2014-09-01 Target enrollment: Participant gender: Summary The purpose of this study is to evaluate efficacy and safety of Methacholine Chloride challenge test in diagnosis of adult asthma Phase: Phase 3 Details Lead Sponsor: Sanwa Kagaku Kenkyusho Co., Ltd.Treatments: Methacholine Chloride