, high potency vitamin c 500mg tablets, with the powerful properties of rutin & naturally sourced bioflavonoids, supports vitamin c in the maintenance of normal collagen & cartilage, powerful bioflavonoids for blood vessels & gum healththis product combines the powerful bioflavonoids rutin & hesperidin with a full 500mg of vitamin c. these bioflavonoids are naturally sourced with rutin being extracted from buckwheat & hesperidin from citrus fruit skins. both of these bioflavonoids have been the focus of research as they appear to be used by the body in a number of ways in particular they support vitamin c in the role it plays in the maintenance of healthy collagen & cartilage. these tissues are the main structural components of blood capillary walls which is why rutin is sometimes recommended for people who bruise easily.this product is often chosen as a high strength vitamin c with the benefits of the added bioflavonoids or chosen first & foremost for the high strength rutin with the additional benefit of the vitamin c. anyway it’s a great product whatever the reason you choose it for!