Rutin is a bioflavonoid found in buckwheat, black tea, citrus fruits, and apple peels. The name comes from the herb rue, but it is actually a complex sugar found in foods. In the 1940s, it was called vitamin P, even though it’s not a vitamin. One of its main health roles is to help the body utilize Vitamin C more efficiently, as well as help produce collagen (the skin’s main building blocks). Rutin has long history of medicinal use - in fact, as of 2013 there are over 130 registered therapeutic medicinal preparations containing rutin in their formulations.
One key benefit of rutin is its ability to strengthen the lining of the blood vessels throughout the body to reduce bleeding and prevent them from collapsing. One way it accomplishes this is through oxerutins, which are a group of flavonoid chemicals derived from naturally occurring rutin and which have been used in European supplements since the 1960s for treating and preventing varicose veins and leg ulcers. According to University of Maryland Medical Center, “A number of studies have shown that flavonoids that come from rutin relieve swelling, aching, and pain from varicose veins.” Because rutin strengthens arteries and veins, it is also used to help treat hemorrhoids, internal bleeding, and to help prevent hemorrhagic strokes.