Probiotics are non-pathogenic living bacteria that are consumed as dietary supplements to maintain a balance in the ecosystem of intestinal microbiota that is beneficial to body health. The purpose of this research was to determine the effect of giving Lactobacillus casei subsp. casei R-68 isolated from dadih and pathogenic bacteria Escherichia coli FNCC-19 and Listeria monocytogenes FNCC-0156 …