Overview EWO1 in Persistent Allergic Rhinitis Patients Status: Unknown status Trial end date: 1969-12-31 Target enrollment: Participant gender: Summary The aim of this double-blind, randomized, parallel group, placebo-controlled study is to assess the efficacy and safety of EWO1 in patients with moderate to severe perennial allergic rhinitis (AR). Phase: Phase 2/Phase 3 Details Lead Sponsor: China Medical University Hospital