To evaluate the effect of Fimarsartan on pharmacodynamics, pharmacokinetics, and the safety of warfarin in healthy male volunteers.
Inclusion Criteria: * age: 20 - 40 years * sex: male * body weight: greater than 55 kg * written informed consent Exclusion Criteria: * known allergy to Fimasartan and warfarin * existing cardiac or hematological diseases * existing hepatic and renal diseases * existing gastrointestinal diseases * acute or chronic diseases which could affect drug absorption or metabolism history of any serious psychological disorder * positive drug or alcohol screening * smokers of 10 or more cigarettes per day 3 month ago * participation in a clinical trial during the last 2 months prior to the start of the study