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Quercetin - 250 mg
50 capsules
Quercetin: The most powerful Flavonoide Antioxidant, with beneficial effects for cardiovascular protection, anti-cancer activity, anti-ulcer effects , anti-allergic activity, cataracts, antiviral activity and anti-inflammatory drug effects.
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Quercetin is a compound which one naturally finds abundantly in apples, onions, green tea and black tea, red wine, vegetables and beans.
Quercetin has been an antioxydant flavonoïde used for more than thirty years to reinforce resistance to the food and respiratory allergies. Its biological effects are explained mainly by its antioxydant activity, a specific synergy with the vitamin C (quercetin and vitamin C are protected and regenerated mutually) and by an anti-inflammatory drug activity diversified as a general-purpose.

In Addition:

- Quercetin inhibits the cyclo-oxygenated and lipo-oxygenated enzymes, which reduces the production of the principal inflammatory mediators: prostaglandins and leucotrienes. Its broad spectrum of activity makes it possible to recommend it in all the inflammatory situations.
- Quercetin inhibits the production of histamine by stabilizing the basophilic ones and the mastocytes. Histamine is directly responsible for the majority of the unpleasant symptoms associated with allergies (sneezing, itchings, etc)
- Quercetin acts directly in the intestinal tract to reduce the reactions to the food allergens.
- a study shows that a high consumption of Quercetin reduced a third the total cardiovascular risk. Quercetin has anti-thrombotic effects and shown vasodilators.
- the risk of cerebral dysfunction is inversely proportional to Quercetin : those which do not consume Quercetin have a risk four times higher.
- Quercetin protects the kidneys from the proven toxicity of certain drugs (cyclosporine).
- Quercetin significantly improves the symptoms of the prostatitis and the chronic syndrome of pelvic pain.
- the anti-cancer activity of Quercetin was the subject of several promising studies.
The benefits of Quercetin were disregarded for a long time due to its poor intestinal absorption which is necessary, and due to its dosis amount. This problem is today regulated thanks to the formula presented by Natrol Laboratories.
Each gélule of 250 Mg of Quercetin contains a minimum of 40% of isoquercitrine, the biodisponible shape of Quercetin.
Recent scientific studies confirm that Quercetin is 400 times more powerful than vitamin E.
Supplement Facts
Serving Size: 2 Capsules
Servings Per Container: 25
Amount per Serving % Daily Value
Vitamin C (as ascorbic acid)  1000 g 1667%
Quercetin  500 mg*
Citrus Bioflavonoid Complex (extracts from lemon, orange, grapefruit, lime, tangerine)  100 mg*


Vitamin C (as ascorbic acid) - 1000mg, Quercetin - 500mg, Citrus Bioflavonoid Complex (extracts from lemon, orange, grapefruit, lime, tangerine) - 100mg, Magnesium Stearate, Silica, Gelatin.


Less than 12 years. Pregnant women or who nurse.


Two capsules per day, during meals, breakfast and lunch.

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