The efficacy and safety of Fluticasone Furoate/Umeclidinium/Vilanterol (FF/UMEC/VI) on cough symptoms in adult patients with asthma, A randomized double-blind, placebo-controlled, parallel group study: Chronic Cough in Asthma (COCOA) study

Background Persistent cough bothers many patients with asthma because it worsens their quality of life; therefore, it must be remedied immediately. The efficacy of triple therapy as a first-line treatment for cough remains unclear. To evaluate the effectiveness and safety of the triple therapy against persistent cough, the clinical effect of regular treatment with fluticasone furoate/umeclidinium/vilanterol (FF/UMEC/VI) or placebo in adult patients with asthma was investigated.