Bioflavonoids (citrus, hesperidin and rutin), sometimes called vitamin P, are substances that are found wherever vitamin C is found in nature. For example, the white material found under the skin of an orange actually contains bioflavonoids. Bioflavonoids have been shown to improve the therapeutic action of vitamin C. In particular, bioflavonoids seem to have a synergistic role with vitamin C in strengthening capillary walls. This is an important consideration for individuals who bruise easily since brittle, fragile capillaries burst easily upon impact causing the characteristic discoloration of bruising. For similar reason, individuals who suffer from hemorrhoids or varicose veins also should make sure that they have adequate uantities of bioflavonoids in their diet