Dietary Supplement. Digestive Health*. Natural Flavors. Colors from Natural Sources. Gluten Free Fiber DX is a delicious and easy way to increase your daily fiber intake. Fiber DX includes chicory root - a prebiotic that is high in inulin, a soluble fiber. The gummies have no added sugar and deliver 4 grams of fiber in each serving. Free of: milk or Dairy, Eggs, Fish, Shellfish, Tree Nuts, Peanuts, Wheat, and Soy. Natural Dynamix is committed to bringing you the most effective dietary supplements...because we believe in optimal health, naturally.