Dietary Supplement. A Key to pH Balancing is Daily Support of your Digestive Tract!* Refreshing Taste & Easy to Swallow. pHion Prebiotic Fiber is a Leading Prebiotic Complex for the Body:*. Blend of three beneficial prebiotic, soluble and insoluble and fibers*. Feeds probiotics and stimulates probiotic growth*. Promotes intestinal health*. A single serving contains 5 grams of beneficial fiber*. Aids in calcium absorption*. Mixes easily and has a refreshing taste*.