There is disclosed a composition comprising at least one of a compound selected from the group consisting of a bioflavonoid, a beta-1,3-beta-1,4-polymer of glucose having a weight average molecular weight (MW) of not greater than 1000 kDa, and a sterol. Moreover, there is disclosed a food or beverage or health supplement product comprising the disclosed composition. Further, there is disclosed a method of lowering blood serum cholesterol levels comprising administering to a patient in need thereof an effective amount of the disclosed composition.