From the Manufacturer:
Chondroitin and similar compounds are present in the lining of blood vessels and the urinary bladder. They help prevent abnormal movement of blood, urine, or components across the barrier of the vessel or bladder wall. Part of chondroitin’s role in blood vessels is to prevent excessive blood clotting. However, whether supplements of chondroitin are able to favorably affect blood clotting remains unclear. In addition, chondroitin sulfate may lower blood cholesterol levels.11 Older preliminary research showed that chondroitin sulfate may prevent atherosclerosis in animals and humans and may also prevent heart attacks in people who already have atherosclerosis.