Overview Smoking Relapse Prevention Among COPD Ex-smokers Status: Terminated Trial end date: 2018-04-13 Target enrollment: Participant gender: Summary A placebo-controlled trial to determine whether recent ex-smokers with COPD who successfully stop smoking after taking varenicline are less likely to relapse back to smoking if they continue using varenicline for a further 12 weeks Phase: Phase 3 Details Lead Sponsor: University of Auckland, New ZealandTreatments: Varenicline