Benefibre

Unlike some other bulk fiber supplements, Benefiber contains a 100% natural fiber. It's taste-free, sugar-free, dissolves completely in noncarbonated beverages and soft foods, and won't thicken.  You can mix Benefiber Powder into any hot or cold beverage such as water, coffee, or juice; into soft foods such as applesauce, pudding or yogurt; or cook with it in recipes for such foods as muffins, sauces or soups, and it won't affect the taste or consistency. Benefiber Powder is not recommended for carbonated beverages.