a water - like fluid containing safe water and a significant quantity of soluble dietary fiber . the resulting solution is generally optically clear and has physical properties similar to potable water . the fluid is intended as a replacement for bottled , or other water , as a means to ensure proper hydration . depending on the soluble fiber used the fluid is either non - caloric or extremely low in calories . the amount of soluble fiber is adjusted to a specific amount of water so that consumption of an adequate amount of fluid ensures hydration will also providing an optimal amount of dietary fiber . this is particularly valuable in stressed situations where the diet may not provide adequate fiber without supplementation . the constant metered supply of fiber provided throughout the day is preferable to , and more convenient than , “ bolus ” administration of fiber through laxatives , etc . additionally , the constant presence of soluble fiber in the digestive tract provides the known beneficial effects of moderating the postprandial increase in blood glucose , modulating serum lipid levels , and suppressing appetite .