Col-Sterol by Seroyal Genestra is a highly rated supplement made from the sterol esters of plants. It is taken from soybeans. but all proteins have been removed to decrease the chance of an allergic reaction. This ingredient is a key player in lowering cholesterol through its ability to block absorption within the intestine. If taken regularly. results should appear within 16 weeks. Also. it is one of the few products that can be safely used by diabetics.