Efficacy and Safety of Oltipraz for Liver Fat Reduction in Patients With Non-Alcoholic Fatty Liver Disease Except for Liver Cirrhosis

Inclusion Criteria: * Patients over 19 under 75 years of age * Patients with non-alcoholic fatty liver disease except for cirrhosis * Patients who have abnormal ALT, AST * Patients who are satisfied with laboratory test * Patients who agree to contraception * Patients who can keet the diet Exclusion Criteria: * Over 2 ratio of AST to ALT * Type 1 diabetes mellitus (insulin-dependent diabetes mellitus) or Type 2 diabetes mellitus(not controlled) * Disorder in liver function with an exception of non-alcoholic fatty liver * Patients with malignant tumors * Patients who have been taken drugs induced fatty liver within 8 weeks of participation in this study * Patients who has been taken any medications that could affect the treatment for NAFLD within 4 weeks * Patients who have been taken Vitamin E (≥ 800 IU/day), thiazolidinediones, orlistat within 12 weeks * Patients who had a Bariatric surgery less than 6 month prior to the participation in the study * Patients who are judged by investigator that participation of the study is difficult due to disease as follow; * Any history of immune disorder * Patients who have received treatment that may affect liver function within 1 month prior to the participation in the study * Patient who has been administered other investigational product within 1 month prior to the participation in the study * Patient who is not allowed to get MRS test: pacemaker, shunt and etc * Pregnant or nursing women * anti-HIV antibody (+) * Patient who considered ineligible for participation in the study as Investigator's judgment