Overview Functional Magnetic Resonance Imaging (fMRI) Investigation of Nicotine Withdrawal Symptoms Status: Completed Trial end date: 2008-02-01 Target enrollment: Participant gender: Summary A single center, double blind, randomized, placebo controlled, two-treatments, two-period crossover study conducted in adult smokers. Phase: Phase 4 Details Lead Sponsor: GlaxoSmithKlineTreatments: Nicotine