Webber Naturals Complete Probiotic Multi Strain features 5 billion active cells for digestive and immune health, and replenishing beneficial bacteria for optimal health. Its five healthy probiotic strains include three Lactobacilli for small intestine care and two Bifidobacteria for colon care. All can withstand gastric and bile fluids for optimum support. Contains no artificial colors, preservatives or sweeteners and no wheat.