This document discusses research on intestinal microflora being conducted in Korea. It describes several research groups and projects investigating the roles of intestinal microflora in drug metabolism, food digestion, and human health. The goals are to better understand how microflora influence toxicity and to characterize differences in Korean microflora related to factors like diet. There is also a focus on developing diagnostic tools and establishing a Korean intestinal microflora database. The research aims to improve safety evaluation of drug metabolites and enable personalized medicine based on individual microfloral profiles.