Rutin is a bioflavonoid that is found in many plants. Buckwheat is a great source of rutin and contains about 3 percent dry by weight rutin when the plant starts to bloom. In particular, rutin, as well as the bioflavonoids, quercetin, and naringen, work synergistically with vitamin C to scavenge free radicals. In addition to being an antioxidant, rutin helps vitamin C to keep collagen, our "intercellular cement", healthy.

Rutin strengthens capillaries, reducing their fragility, and regulates their permeability. This makes it a very supportive bioflavonoid for blood vessel health. Rutin may help reduce nosebleeds, bruising and swelling due to sports injuries.

Rutin, along with other bioflavonoids, helps to inhibit the release of histamine which offers natural support to allergy-sufferers.