Citrus Bioflavonoids are naturally extracted from citrus fruits and constitute an important group of antioxidants. The major bioflavonoids found in citrus fruits are diosmin, diosmetin, hesperidin, hesperetin, naringin, naringenin, narirutin, neohesperidin, nobiletin, tangeretin, eriodictyol, and eriocitrin. In the 1950s, the nutritional benefits of bioflavonoids were so highly recognized that this group of compounds was referred to collectively as Vitamin P. While not strictly vitamins, bioflavonoids do possess “vitamin-like” properties.