Nature Made Prebiotic Fiber is a sugar free and taste free drink mix powder that feeds the good bacteria in the digestive system and helps support digestive health. This prebiotic dietary fiber supplement is sugar free, taste free, and vegetarian with no color added, no artificial ...Nature Made Prebiotic Fiber is a sugar free and taste free drink mix powder that feeds the good bacteria in the digestive system and helps support digestive health. This prebiotic dietary fiber supplement is sugar free, taste free, and vegetarian with no color added, no artificial flavors and no preservatives.