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