Psyllium Hulls ComboDiscover Psyllium Hulls Combination provides bulk to the diet. The hulls absorb several times their weight in liquid. Intestinal System Support Is an excellent source of soluble fiber Facilitates the natural process of waste elimination May support cholesterol levels already in the normal range How It Works How It Works Psyllium has high amounts of soluble fiber that has a mucilaginous quality. NSP Psyllium Hulls Combination contains psyllium hulls,