A flavonoid found in apples, green tea and a number of other foods. In at least one study, people who had diets high in quercetin had a 58% lower chance of developing lung cancer than those with lower quercetin intakes. A nutritionist may suggest quercetin supplements or adding more foods containing quercetin to the diet to help prevent recurrence of cancer.
The most studied flavonoid because it is among the most abundant; a more potent antioxidant than vitamin E, according to some research. Onions are the richest source; it's also found in wine and tea. (Many sources say "onions, tea, wine and apples" because these were the main dietary sources in a major Netherlands study.) Among other functions, it may block carcinogens as well as slow the growth and spread of cancer cells. It also may prevent the conversion of nitrites in the stomach to compounds that become building blocks for carcinogens. Quercetin appears to survive the heat of cooking, and about 5% to 10% of the quercetin from onions is absorbed by the body.
Quercetin is considered to be the main flavonoid in the diet. People who have the highest intakes of quercetin-containing foods were found to have a lower risk for asthma, lower mortality from heart disease, and lower lung cancer incidence.
A flavonoid with anti-oxidant properties particularly useful in controlling the free radical called singlet oxygen. It can kill herpes simplex virus, and enhances other antiviral compounds. Its anti-inflammatory properties make it useful in treating allergic conditions such as hives, hay fever and asthma. Apples contain high levels of quercetin in their skins, but it is also found in red onions, tomatoes, tea and cranberries.
A concentrated form of bioflavanoids. An antioxidant as well as a provider of protection against heart disease and cataracts. Also improves blood vessel strength.
A powerful bioflavonoid, quercetin is isolated from blue-green algae. Its primary therapeutic use has been in controlling allergy and asthma reactions, since it suppresses the release and production of the two inflammatory agents that cause asthma and allergy symptoms - histamines and leukotrienes.
Bioflavonoid, derived mainly from blue-green algae. Provides antioxidant protection.
A prime role of quercetin is to protect the integrity of cell walls from free radical damage. In addition, quercetin prevents the release of histamines into the bloodstream, thereby helping to control food and pollen allergies.
3,3',4',5,7-pentahydroxyflavone; one of the most widely distributed flavonoids in edible fruits and vegetables.
An antioxidant flavonoid found in onions.
has a synergistic effect with ephedrine and caffeine, increasing and prolonging their properties.
A member of the flavonoid group found in fruits, vegetables, & tea, Quercitin inhibits the release of histamine & other inflammatory mediators. It decreases the inflammatory response in the mast cells of the nose & mouth & all mucous membranes. Useful for: Antiallergenic, antihistaminic, anti-asthmatic, anti-inflammatory properties. Thus helpful in relieving the discomforts of allergic disorders. May have some anti-viral activity. Is a potent inhibitor of mast cell degranulation which is believed to be a major factor in the tissue destruction of rheumatoid arthritis & therefore may help with RA. Varicose veins. Capillary fragility & spontaneous bruising. Thrombophlebitis. Edema. Raynaud's disease.
This bioflavonoid occurs in many plant foods. Quercitin balances histamine levels and has a synergistic effect with bromelain. See: Quercetin/Bromelain
A type of flavonoid (plant pigments that give plants & fruits their color) that has anti-inflammatory and antioxidant properties.
Isolated from blue-green algae, quercetin is a powerful bioflavonoid. It is used therapeutically in controlling allergy and asthma reactions because it suppresses the release and production of histimines and leukotrienes.
A pharmacologically active flavonoid that inhibits the synthesis of enzymes necessary for the release of histamines. - ack To Top
Related Topic"A highly active bioflavonoid which is absorbed most effectively in combination with bromelain..."
Quercetin is a flavonoid and more specifically a flavonol. It is the aglycone form of a number of other flavonoid glycosides, such as rutin and quercitrin found in citrus fruit. Quercetin is found to be the most active of the flavonoids in studies, and many medicinal plants owe much of their activity to their high quercetin content.
