A Clinical Trial to Compare Pharmacokinetics of the "CDFF0318" and "Champix Tab. 1mg"

Inclusion Criteria: * Healthy male subjects aged 19 to 45 years * a body mass index of 18.0-30.0 kg/m2 Exclusion Criteria: * Subjects with disease history or current disease of clinically significant liver, kidney, nervous system, respiratory system, endocrine system, blood/tumor, urinary system, cardiovascular system, etc. * Subjects with a history of gastrointestinal diseases or gastrointestinal surgery that may affect the absorption of investigational drugs * Subjects with a history of hypersensitivity reactions or clinically significant hypersensitivity reactions to drugs containing varenicline and other drugs (ketoprofen, aspirin, antibiotics, etc.) * Subjects who have an abnormal diet that may affect the absorption, distribution, metabolism, and excretion of the drug, or who eat food that may affect drug metabolism