Abstract: A novel product comprising a mixture of probiotic and prebiotic ingredients for the treatment of IBS, IBD, Crohn's disease, antibiotic induced diarrhea and other bowel disorders is described herein. Stabilized rice bran derivatives, including stabilized rice bran, RiSolubles, RiceMucil, and Cea100, are used as the source of prebiotics. The prebiotic source is not only rich in fructo-oligosaccharides, but also has potent antioxidants and phytonutrients for intestinal health and the proliferation of bifido-bacteria in the intestines. The probiotics used are different combinations and concentrations of Lactobacilli species, depending on the specific gastrointestinal disease which is targeted. When refrigerated, the products are shelf-stable (95-99%) for at least one year.