Citrus bioflavonoids occur in the white lining of the peel and is the usual form of this nutrient as a supplement. The bioflavonoids help to strengthen capillaries, veins and arteries so conditions such as varicose veins, hemorrhoids, and blood spots on the skin are all helped. In diabetics where the high blood sugar breaks down the blood vessels, bioflavonoids are highly beneficial. Citrus bioflavonoids enhance the ability of vitamin C and are a powerful antioxidant. There are many different bioflavonoids; this is a blend. You can also get Rutin, and Hesperidin, part of this complex, individually. You can make your own bioflavonoids from this recipe.