Clinical Trial to Assess the Safety and Pharmacokinetics of DA-2802 319mg and Viread 300mg in Healthy Male Volunteers

Inclusion Criteria: * Age between 20 to 50, healthy male subjects(at screening) * Body weight over 55kg, BMI between 18.0 - 27.0 * Volunteer who totally understands the progress of this clinical trials, make decision by his free will, and signed a consent form to follow the progress. Exclusion Criteria: * Volunteer who has past or present history of any diseases following below.(liver including hepatitis virus carrier, kidney, neurology, immunology, pulmonary, endocrine, hematooncology, urinary, skeletomuscular, cardiovascular, mental disorder) * Volunteer who had GI tract disease(Crohn's disease, ulcer, acute or chronic pancreatitis) or surgery(appendectomy, hernioplasty are excluded) * Genetic disorders such as glucose-galactose malabsorption, Lapp lactose deficiency, galactose intolerance which is contraindication to Viread * Volunteer who had hypersensitivity reaction to medicines including Tenofovir, Aspirin, or antibiotics * exceed 1.5 times the normal range of AST, ALT at screening test before randomization * history of drug abuse, or a positive urine drug screen * having ETC drug or herbal medicines within 2 weeks before first administration or OTC drug or vitamin preparations within a week before first administration * Participation in any other clinical trial involving investigational drugs within 3 months * Volunteer who had whole blood donation in 2 months, or component blood donation or transfusion in 1 months * Regular alcohol consumption(over 21 units/week, 1unit=10g of pure alcohol) or volunteers who cannot abstain from drinking during the study * Volunteers smoking over 10 cigarettes per day or who cannot abstain from smoking during the study(from 24hr before admission to discharge) * Volunteers who had grapefruit containing foods from 24hr before admission to discharge or who cannot abstain from grapefruit containing foods * Volunteers who are not using adequate contraception methods or have a pregnancy plan * volunteers who cannot abstain from caffeine containing foods(coffee, tea, soft drinks etc) during the study * any condition that, in the view of the investigator, would interfere with study participation