Efficacy and Safety of Dianicline Treatment as an Aid to Smoking Cessation in Cigarette Smokers (AMERIDIAN)

Inclusion Criteria: * Outpatients, over legal age, smoking at least 10 cigarettes/day as a mean within the 2 months preceding the screening visit. Exclusion Criteria: * Patients who have taken an investigational drug within the past six months prior to the screening visit. * Patients who had a previous quit attempt (= or \>1 day with the aid of pharmacological adjunct) in the previous three months (before screening). * Patients who have smoked or consumed non-tobacco cigarettes or any form of tobacco product (other than cigarettes such as cigars, pipes, smokeless tobacco, etc) more than 3 times within the 3 months preceding the screening visit. * Patients who currently present with (based on Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition \[DSM-IV\]): * Psychotic disorder * Major depressive episode * Pregnant or breast-feeding women. * Women of childbearing potential not protected by effective contraceptive method of birth control and/or who are unwilling or unable to be tested for pregnancy. Medically acceptable methods of birth control for this study include approved hormonal contraceptive medications or devices, approved intra-uterine contraceptive devices, use of two combined barrier methods. * Patients who have suffered from a myocardial infarction, unstable angina or other major cardiovascular event within the past week prior to screening. * Patients who have a history of multiple allergic reactions to medications in two drug classes. * Patients who have QTcF \> 500 ms on the electrocardiogram (ECG). * Patients with mild, moderate or severe renal impairment. * Patients who have an abnormal laboratory test of potential clinical significance at screening.