Overview Efficacy and Safety of Norketotifen in Adults With Allergic Rhinitis Status: Completed Trial end date: 2019-05-29 Target enrollment: Participant gender: Summary This is a Phase 2a study to evaluate the efficacy and safety of Norketotifen (NKT) in subjects with allergic rhinitis. Phase: Phase 2 Details Lead Sponsor: Emergo Therapeutics, Inc.Treatments: Ketotifen