Ensuring you maintain healthy intestinal function, prebiotic and probiotic supplements provide your intestines with the best environment for a balanced microflora. What is the difference between prebiotics and probiotics? Probiotics are naturally occuring bacteria found in food, or supplements, that benefit your body in many ways. Prebiotics are substances that your body cannot digest, but your gut flora eat this as food. The many benefits of taking these supplements may include proper digestion, immune health, boosted mood, lowering blood pressure and even preventing autoimmune disease. As the standard American diet lacks many naturally occurring prebiotics and probiotics, it may be necessary to supplement using probiotic capsules or chewables.