Objective: Inflammatory bowel disease (IBD) is an idiopathic disease associated with changes in the immune system and in the intestinal microbiota. The most accepted hypothesis of IBD pathogenesis is thought to be the abnormal immunological response and chronic intestinal inflammation, which is caused by the complex interactions between genetic, environmental factors and the host immune system. Microbial flora is important in the maturation of the immune system. Dysbiosis is defined as changes in intestinal microbiota composition and function. Clinical and experimental studies support that dysbiosis plays a significant role in the etiopathogenesis of IBD. Probiotics are useful live microorganisms that provide the intestinal balance in the host. In this study, we aimed to evaluate the anti-inflammatory and anti-oxidant activities of Enterococcus faecium, Lactobacillus acidophilus, Lactobacillus rhamnosus, Bifidobacterium bifidum and Bifidobacterium longum bacteria in the experimental colitis model.