Absolute Bioavailability of YH4808 With Accelerator Mass Spectrometry(AMS)-Based Microdose Study

Inclusion Criteria: * healthy male subject aged 20 to 45 at screening * subjects who have weight over 55 kg with BMI ranged from 20.0 to 25.0 * subjects who decide to participate voluntarily and write a informed consent form Exclusion Criteria: * subjects who have clinically significant disease of cardiovascular, respiratory, renal, endocrinological, hematological, gastrointestinal, neurological(central nervous system), psychiatric disorders or malignant tumor * clinically significant allergic disease (except for mild allergic rhinitis) * subjects who have determined not eligible by screening test (medical history, physical examination, 12-lead ECG, laboratory test, etc) within 28 days of study start * subjects considered unsuitable for inclusion by the investigator