Dr. Colbert's Fiber Zone comes in a berry or lemon-lime powder flavored form. This specially formulated fiber powder supports healthy digestion as well as curbs hunger cravings. This is achieved because each scoop of Fiber Zone is naturally sourced from psyllium husk and inulin, which provides the digestive tract with both soluble and insoluble fiber. Fiber Zone works to bind partially digested foods and carry them from your stomach through your small intestine. The water-soluble psyllium husk in Fiber Zone absorbs water in the gut to create a thick, gel-like substance similar to a sponge, making digestion easier to accomplish. Psyllium husk is hypoallergenic, gentle on the digestive tract, and works to soften stool to support healthy bowel movements.