Probiotics One Daily Support is prebiotic and probiotic. These two terms may sound similar, but this is not the case. Prebiotic refers to the non-digestive part of food such as chicory root, apple skin, bananas, onion, and garlic, which passes through the small intestine undigested and is fermented after reaching the large colon. This fermentation process, in turn, releases live bacteria found in the human digestive tract, which we know as probiotics.